Start with the call log
Take screenshots showing the full number, date, time, and repeated calls. Avoid cropping away surrounding entries that help show frequency. If the same company appears to call from different numbers, preserve each number separately.
Save voicemail in its original form
Keep the original audio file when possible. A voicemail may contain a recorded voice, business name, callback number, offer, website, or disclosure that is not visible in the call log. Write notes separately rather than modifying the original file.
Record the caller’s clues
- The company or brand the caller names
- A website, email address, or callback number
- The product or service being sold
- The exact opt-out language you used
- What happened after you asked the caller to stop
- Any account or recent transaction that might explain consent
Different number does not always mean different caller
Caller ID can be spoofed, and campaigns may rotate through many numbers. Message phrasing, voicemail language, destination websites, merchant information, and contact timing can help connect separate calls to the same operation.
Keep a simple timeline
List each call or text in chronological order. Note the date, time, number, contact type, what happened, the evidence file you saved, and whether it occurred after an opt-out. A consistent timeline makes the record easier to review.