An old debt that has passed the Statute of Limitations (SOL) is not dead. Debt collectors can try to revive it and sue you for payment.
If you make even one tiny payment on an expired debt, the Statute of Limitations clock restarts in most states. The debt is no longer expired.
Do NOT admit the debt is yours. Do NOT give them any payment. Any form of acknowledgment can restart the legal time limit.
Send a certified letter demanding written proof of the debt and the date of the last activity. This legally limits their communication with you.
Collectors must provide validation of the SOL date. Know your state’s specific time limit (it varies widely) to know your legal rights.
...the debt is past the Statute of Limitations AND you have not acknowledged it. Do not let them trick you into resetting the clock.