how do i add make my mobile payment available again because it is blocked and told me to call my provider but i have no idea who the provider is

Firstly, I cancelled the payment on accident and therefore I couldn’t add anymore payment method because when I add payment method they will say ‘there may be a billing issue with your account and contact the provider’. With that type of issue I cannot create payment method neither using other numbers to connect as it will say the same type of stuff and the only way to solve it is to know how to contact the provider.