I canceled my part B last year in September and I still didn’t receive my 144 per month

Hi. If you submitted your Part B cancellation in September of 2020 then your Part B coverage should have been terminated effective November 1 2020. So, Social Security should have stopped withholding your Part B premiums beginning with the Social Security benefit payment you received in November 2020.

Social Security should refund any premiums they've withheld after your Part B termination date, but since they haven't your only recourse is to follow up with them. If that doesn't work, you may want to contact the offices of one of either your U.S. house representative or one of your U.S. senators.

Best, Jerry