Why can't I update my payment information on my account?

For some reason my account will not let me update my payment information?? It keeps saying I put in wrong info which is very odd then once I contact over 20 DIFFERENT emails 10 different chats NO ONE CAN HELP..So not only am I’m out of money they’re not trying to even give me a chance to prove my authenticity I even said I can provide a bank statements CLEARLY showing my real name and last four of the ending back no account number , social security, llc form anything to show them this is not FRAUD!!! Never dealt with unprofessional company that wants to keep your money and not give you a chance to authenticate

Still no help??

What I don’t understand since this is my account they clearly see I’m fulfilling orders can’t be fraud if orders are going out!? Why can’t my funds be redirected to my PayPal or send it in form of a check to CORRECT ADDRESS? Come on I know there’s so way to resolve this…