Please see if link below takes you to Payment methods in your subscription so you can add/delete/etc. your methods:
If the above was useful please click Accept Answer and upvote.
I've read all the articles about billing profiles, I've gone through 5 different domains, I've signed in -- I can't find this stupid page to change my payment method. This is RIDICULOUS. This makes me want to shut my account down and never use Mircrosoft again. Please help me change my payment method.
Hope you got a chance to review the action plan suggested below. Please do let me know if you have any queries in the comments section. If you don't have any further queries and the suggestion works as per your business need. Please "Accept the answer" and "share you feedback (Yes/No)". This will help us and others in the community as well.