you can't, it's only possible if you can hijack the bank connection or the victim connection then intercept the request & also you can dump the json response when you hijack the connection
any cc are cheaper than her balance are fraud & scam.
no one truly know how much balance in the cc information because you are not owner the bank or have a such tool to check the balance.
only it's possible to know the balance when you breach a bank or website database when you dump the...