ADD'L INFO for original question:
I just realized the $462.61 they refunded appears to be the 2021 Q1 estimated payment I made of $456 + $6.61 interest, total $462.61. Why would they refund my Q1 2021 payment for $456? Was it because I applied my 2020 $765 to Q1? I did make the Q1 2021 payment of $456 late...would they have refunded it because of that?
Does this mean I can consider the $765 as a payment for 2021, but I guess I cannot use the $456 payment they refunded? This whole thing confused me as to why they did this?
