just a real quick noob question

[sunnycalifornia]

i tried depositing real money @ both FTP and Pokerstars with a mastercard credit card but it said my bank blocked the transaction. i tried with a bank of america debit card (is also a VISA credit card) but it was denied as well.

i thought visa/mastercard was supposed to go through these two sites? do i need to call my bank? or use epassporte?