API Access Blocked Due to Disputed Unauthorized Usage

It’s standard operating procedure across all businesses to disable access to services in the event of excessive outstanding bills/balances of all kinds–even if those charges are being disputed. If it’s just a quota issue, it’s likely it will resolve itself through the normal course of time pushing you into a new accounting window, which will probably happen before the underlying issue is resolved. If it’s a case of burning through your API credit, then you won’t have access restored until your available balance is positive again, which you can do by simply putting more funds in and hoping that OpenAI eventually refunds you some credit. You won’t get the money back as cash, but it’ll all balance out eventually in the end.