How to implement payment, for example, for mobile communications through the internal balance of the site user?

Question

Payment systems

Actually, the question is in the title.
Maybe there are some affiliate programs or services that allow you to implement this?

Answer 1

you must have money on your account in some kind of payment system in order to pay for mobile communications through the api of this system from your account, and you will already be charged from the user's balance on your site.
Something like that, but it's all in my head. In practice, there was a similar task, it did not work