Told I owe money back on my benefits - 10 weeks in

I received a letter saying I was overpaid about $1200 on my claim. It has been weighing on me all week. I did not notice any errors at the time. Who should I talk to first?

Keep everything in writing and save the confirmation numbers. It made the follow-up calls so much easier.

Collect your pay stubs and certification records for the weeks they name. Mine showed the error was a date mix-up.