Hi I have been on Unemployment since March and on the Unemployment form that I got from the UI office is that I have like 19,000 and now I have to pay like $700! help!

The 19,000 was the amount they apparently said i received from UI, that doesnt seem right. I also got the stimulus and the extra 300. Now so far I have to pay like 700!! how can people on UI afford to pay this back?