Fwiw, managed to solve it by creating new organization account. Had the same issue with my personal account (it had expired back in 2017). Tried with 5 different credit cards issued by 3 different banks over the last 3-4 months without success. Spamming devprograms email account every other day rewarded me with one canned reply saying that the bank is rejecting the withdrawal and they cannot do anything; all other messages i sent were left unanswered. I figured the issue could be with old, incorrect address i had set for my personal account. When i tried to change it i got replied that changing the address is allowed only for active memberships. Also, changing personal account to organization was not allowed for expired accounts. Fortunately i had the privilege of having my own legal entity with DUNS number already present. After enrolling as organization i got called back within two days by very friendly and helpful developer program support advisor. The purchase for organization account membership went through in ~15 minutes using the same credit card that did not work for my personal account. So definitely not an issue by the financial institution. Also asked the advisor how i could fix my personal account membership. He suggested me to send an email to devprograms just with the request to have them call back. So pehaps something worth a try for someone who has not yet given up.

Seems to be fixed in Xcode 12 Beta 4