Debt Collection Agencies: Who They Are and How to Respond

Two things to check before any of them get a dollar: your validation rights under 15 U.S.C. § 1692g — covered in our debt validation letter guide — and your state’s statute of limitations, because a debt too old to sue on changes every negotiation: see debt statute of limitations by state. If the calls won’t stop, a cease-and-desist letter ends contact, and every response deadline that applies to these collectors is gathered in our dispute deadline index.

Being sued by a collection law firm?

Some debt collectors are law firms that file lawsuits. If you’ve been served with a summons, the clock is already running — you usually have only 14–30 days (it varies by state and court) to file a written Answer before the court can enter a default judgment. Don’t ignore it; start here:

Third-party collection agencies

Hired by the creditor — in most placements the original creditor still owns the account.

Debt buyers

They purchased the account outright — which makes the chain of assignment from the original creditor the document that decides everything.

Hybrids — collector on some accounts, owner on others

Dealing with a collector not listed here? The playbook is the same regardless of the name on the envelope — start with the validation letter, check your state’s limitations period, and if the account traces to an apartment move-out, check your state’s deposit deadlines first.