How do I dispute a debt collector?

Send a written dispute and request validation within the window stated on the notice, and keep a dated record of every notice, letter, and call.

What should I document with a debt collector?

Every collection notice, all letters you send and receive, and every call — date, time, who called, and what was said.

Can I stop a debt collector from contacting me?

You can request in writing that they stop contacting you, and you can dispute the debt — keep dated proof of every request and their response.

When should I start documenting?

From the first contact. A dated record of every notice and call is what protects you if the debt is wrong or the collector breaks the rules.

buildmyevidence Start your record →

buildmyevidence · debt

Dispute a debt collector. Document everything and build your case.

Every letter, call, and notice — captured, dated, and kept in one place. The record that backs a written dispute and stops the harassment.

Start your record See the free demo →

Case TimelineDebt Dispute18 ENTRIES · TIMESTAMPED

Collection notice receivedFeb 5, 2026 · 9:45 AM · amount looks wrong

Call loggedFeb 6, 2026 · 8:10 PM · called after 9pm

Validation letter sentFeb 9, 2026 · 11:00 AM · within 30 days

Dispute documentedFeb 25, 2026 · 4:00 PM · no validation provided

Export complete case file → PDF

Is this you?

Is this happening to you?

A collector is after you, and something's not right. If this sounds familiar:

A debt that isn’t yours, or already paid
An amount that doesn’t add up
Calls at all hours, or threats
No proof the debt is even valid
The same debt sold and chased again

A debt dispute comes down to the notices, the dates, and what they can actually prove. That's what this app helps you build.

How it works

Three simple steps.

Capture — Add every collection notice and log every call. Timestamped instantly.
Build — Everything lands on one dated timeline.
Export — One tap turns it into a complete record for a dispute, a regulator, or your lawyer.

The demo

See the whole app for yourself.

No signup. No payment. Just open the free demo and see exactly how it works — about 60 seconds.

Try the free demo →

For consumer-protection lawyers & advocates

A debt dispute is won on what the collector can't prove.

Most people arrive rattled, with a pile of notices and “they keep calling.” The ones who win show up with every notice dated, every call logged, and the validation demand on record. You can't answer the calls for them. But you can point them somewhere that captures it.

What usually walks in

“They keep calling about it”
Calls nobody logged
Notices out of order
No validation on record

What buildmyevidence brings

Every notice dated & filed
Calls logged with times & what was said
Validation request documented
Exported as a clean record

They arrive ready

The full record, not “I think”. Stronger from day one.

Evidence isn’t lost

Recommend it at the first collection call.

Costs you nothing

No admin. Just point them to it.

See what your client would bring you →

Opens the free demo · no signup

If it's not documented, it's just your word.

Start building your record today — or see the free demo first.

Start your record See the free demo →

Private to you · export your case file anytime

Questions

Disputing a debt collector

How do I dispute a debt collector?: Send a written dispute and request validation within the window stated on the notice, and keep a dated record of every notice, letter, and call.
What should I document with a debt collector?: Every collection notice, all letters you send and receive, and every call — date, time, who called, and what was said.
Can I stop a debt collector from contacting me?: You can request in writing that they stop contacting you, and you can dispute the debt — keep dated proof of every request and their response.
When should I start documenting?: From the first contact. A dated record of every notice and call is what protects you if the debt is wrong or the collector breaks the rules.

Other situations

Dealing with more than one thing?

buildmyevidence works for any situation you need to prove. A few others:

Consumer complaint /consumer-complaint Medical billing dispute /medical-billing-dispute Government agency dispute /government-agency-dispute Identity theft /identity-theft

See all situations →