I wrote two different letters with supporting evidence to the IRS regarding a misapplied payment in 2021 after my return has been filed and processed by them. It has been almost two months and I have not heard from them. Should I continue to write to them every 30 days because calling the number on the notice isn't going through. Or should I amend my 2021 return -- The 2021 3rd payment was posted as a 2020 payment which made no sense because:
1. The deadline has passed already
2. My 2020 return has been filed
Thank you
