Overpayment letter from the unemployment office - any advice?

The agency says I reported earnings incorrectly, but I think I followed the instructions. I cannot afford to repay it all at once. Who should I talk to first?

Thanks for writing this out. I went through something close to it 3 months ago, and it got easier once I kept a simple log of every call and form.

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