I received an amount in July from IRS which is different from the refund due me on my Amended 2020 return

Following TurboTax's prompting, I filed an amended 2020 Federal return...I did this because I've rec'd unemployment benefits since Aug, 2020 and already had the taxes taken out since the beginning of benefits.  However, when the CARES act (or one of those acts) was approved I did an amended return to recoup the taxes I had already paid on the first $10,200 of unemployment benefits. I did receive a direct deposit from IRS I think in July, 2021 but it was not even half of the amount I was supposed to get refunded to me.  Can you shed some light on this situation for me?