Quick answer
The most useful documents show who contracted, what service was promised, what changed, what the provider delivered, how the shortfall was recorded, what you paid, what remedy you requested and how the provider responded. A large email export is less helpful than a source-indexed set that answers those questions.
How to use this guide
Start with the agreement and approved scope. Add transaction and payment records, a chronology, evidence of performance, complaint correspondence, repair or inspection material, proof of claimed loss, and any ombud, regulator or court communication. Keep originals unchanged and note any important record that is missing.
1. Records that identify the parties and transaction
Preserve the quotation, booking confirmation, signed contract, account-opening record, invoice and payment beneficiary details. Record the legal or personal name of the consumer and the exact supplier entity, not only the trading name shown in an advertisement.
These records help screen Consumer Protection Act coverage. The CPA contains scope rules and exclusions, and a juristic-person transaction may be excluded if the consumer's asset value or annual turnover at the time equals or exceeds the prescribed R2 million threshold. Where a company or other juristic person is complaining, keep the records needed to establish the contracting entity and, if relevant, its threshold position.
Do not assume the marketplace, franchise, subcontractor and person who performed the work are interchangeable. Keep the document that connects each entity to the service.
2. The original scope and every approved change
Place the final accepted quote, statement of work, specification, drawings, measurements, booking details, service level, completion date and warranty terms in one section. Then add variations, change requests, substitutions and revised prices in chronological order.
For each change, identify who proposed it, who approved it, the date, price effect and time effect. A voice note saying “go ahead” may matter, but preserve the original audio and surrounding conversation rather than relying on a typed recollection.
Section 54 of the CPA concerns timely performance, notice of unavoidable delay, service quality and the handling of the consumer's property. The agreed scope is necessary to compare the provider's undertaking with what happened; it is not proof on its own that the service was deficient.
3. Payment, billing and cancellation records
Keep invoices, receipts, bank proof, card slips, deposit requests, refund notices and credit notes. Reconcile each payment to the service stage or item it was meant to cover. If the provider deducted an amount, record the reason and the clause relied upon.
Separate the price of the service from the price of goods supplied with it. In a repair, installation or construction matter, parts and workmanship can raise different questions. Also separate disputed loss from money already paid. A later corrective quote is not the same as an invoice for completed corrective work.
If cancellation is involved, retain the notice, delivery proof, contractual response and any calculation of charges. Do not edit the original invoice to show what you believe should have been billed.
4. Evidence of what the provider actually did
Useful performance records may include job cards, attendance logs, timesheets, delivery notes, inspection sheets, completion certificates, system logs, before-and-after photographs, test results, access records and handover notes. The relevant category depends on the service.
Capture condition and sequence. A photograph should retain its original file, date and source. A screenshot should show the account, page or message context where safe. If the service involved software or data, export logs and tickets without changing the only copy. If it involved a vehicle, appliance or building work, record who had custody and what later work altered the condition.
Label provider-created records separately from your own observations. A completion certificate records what its author certified; it does not automatically settle whether the work complied with the agreed or legal standard.
5. Communications about delay, quality and access
Keep the messages that explain expected dates, unavoidable delays, missed appointments, denied access, dependencies and revised delivery promises. Preserve complete threads rather than isolated screenshots.
Build a short table showing the date, speaker, channel, promise or explanation, and related source. This helps distinguish a provider delay from a delay caused by missing consumer information, third-party approval, weather, access or a requested scope change.
Do not discard apparently unhelpful messages. A fair record includes warnings, requests and explanations from both sides.
6. The supplier-first complaint and response
Include the consolidated complaint, proof it reached the designated channel, complaint reference, acknowledgement, substantive response and every offered remedy. If the provider rejected the complaint orally, send a neutral confirmation of what you understood and invite correction.
The NCC's complaints guidance asks for the transaction date, dispute date, proof of purchase, steps taken to resolve the matter and communications with the supplier. Its service standards also refer to the contract or offer, receipts or invoices, supporting correspondence and ADR outcome. Those categories provide a useful submission index even though the correct forum must still be confirmed.
The CGSO expects a supplier-first process for complaints within its jurisdiction. Keep the supplier response because the ombud may assess both accounts rather than decide from the consumer's initial statement alone.
7. Technical or independent assessment records
Where workmanship, causation or corrective cost is disputed, preserve the inspection mandate, assessor's qualifications, photographs, measurements, testing method, report, invoice and any limits stated. Distinguish an expert conclusion from a contractor's quote to perform replacement work.
An independent report can be valuable, but it should identify what was inspected and what was not. If the disputed item was dismantled, repaired or discarded before inspection, record that change honestly.
Do not ask a replacement provider to copy your preferred legal conclusion. Ask for observable defects, applicable specifications, possible causes, remedial options and assumptions within that person's expertise.
8. Documents supporting the remedy and loss
State the requested outcome and attach records that make it measurable. Corrective-work requests may need a defect list and access plan. A partial refund request should identify the affected portion of the service. A damages allegation may require invoices, valuations, income records, medical documents or other proof, depending on the loss.
Section 54 does not convert every service failure into an automatic full refund. Keep the evidence needed to assess the extent of the failure and the reasonableness of the requested remedy.
Avoid adding speculative future amounts to the complaint total. Mark estimates as estimates and retain the assumptions behind them.
9. Forum and timing documents
Add the relevant ombud screening result, complaint form, closing letter, referral, non-referral, regulator request or tribunal document. Keep each reference number and submission receipt. If a formal decision sets a response or review date, preserve the complete notice.
The forum may depend on the sector. A general consumer service may fit CGSO jurisdiction, while a motor-industry repair may be routed to MIOSA and financial, insurance, municipal or other services may belong elsewhere. Confirm current jurisdiction instead of selecting a body because its form is convenient.
Do not assume that a complaint pauses every other time limit. Add a date sheet showing the transaction, performance, discovery, first complaint, repair attempts and external filings so timing can be assessed from sources.
Build a ten-column document index
For each file, record an exhibit number, date, author or holder, recipient, description, service stage, issue supported, original format, integrity note and status. Use “missing”, “requested”, “received”, “disputed” or “not applicable” rather than leaving unexplained blanks.
The final pack should allow a provider, ombud or lawyer to locate the decisive record without searching an entire inbox. Documents create a reliable factual base; they do not themselves guarantee jurisdiction, prove breach or determine the remedy.
Important limitation
This document guide is general information. It does not establish that every listed record exists, is admissible, proves deficient service or entitles the complainant to a particular remedy.
FAQs
Is the invoice enough for a complaint about poor service?
Usually not. An invoice helps prove the transaction and price, but the agreed scope, changes, performance evidence, complaint history and requested remedy often explain the dispute more fully.
Should I include messages that support the service provider's explanation?
Yes. Preserve the complete record, including access problems, warnings, dependencies and scope changes. A balanced file lets the actual cause and responsibility be assessed rather than hidden.
What should I keep if another contractor corrects the work?
Record the original condition first, preserve quotations and inspection material, and retain the replacement provider's scope, photographs and invoice. Note exactly what was changed and when.
Do service-complaint documents prove that I am entitled to a refund?
No. They establish facts for assessment. CPA coverage, the extent and cause of the failure, the appropriate remedy and the selected forum still require legal or regulatory analysis.
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Legal note
This article is general legal information for South African readers. It is not legal advice. Speak to a qualified legal professional about your specific facts before taking action.