Access to everything is declined

I am not happy. I have an account and credit but when I want to buy with the account it declines my order without explanaition. When I try to log into the app or website it declines my password aswell, when I request for a new password it gives me a temporary one I need to use to create a new one but my new password also keeps getting declined, but nothing got declined when I needed to give consent for money to be deducted from my bank account. Everything when so smoothly but now it all suddenly went to hell.