Create a one-page timeline
List the purchase, first problem, each contact and the latest response in date order. Keep entries short and factual.
Save the source documents
Keep receipts, terms, product listings, invoices, photos and messages in one folder. Preserve the original files where possible.
Record calls safely
Write the date, time, channel, case number and agreed next step. Check local law before recording a call.
Prepare a shareable copy
Make a redacted version without payment details, passwords, addresses or irrelevant information about private people.