Permanently Left UK but received Tax Bill Still

I received a tax bill from the UK about late filing and other penalties. I left the UK Jan 2020. I worked there from Jan 2018 to Jan 2020 but have now repatriated back to US. How do I resolve this? I can not login or call long distance.

Hi mbhuiyan,
You can check if you meet Self Assessment criteria here:
Check if you need to send a Self Assessment tax return
If after checking the criteria and you do not meet any criteria then you can submit a request to close your Self Assessment account.
You can also contact HMRC to review including webchat option here:
Self Assessment: general enquiries
Thank you.