Overpayment letter from the unemployment office after 4 years as a call-centre agent

I received a letter saying I was overpaid about $800 on my claim. There are 4 people counting on me, so I am trying to be careful. I cannot afford to repay it all at once. Has anyone disputed one of these?

Read the letter for the appeal deadline and act on it, even if you think you will end up repaying. Then ask about a payment plan.