i think you can use other payment method, i see some bitcoin user from india using perfect money to buy and sell bitcoin. you can use international exchanger or personal exchanger (you need trusted exchanger for this option) to buy and sell bitcoin.
So if I add fund from my bank account to perfect money and make bitcoin purchase then bank will see it as a transaction to perfect money and won't know that it was finally used for bitcoin purchase because bank is dealing with only perfect money, not with bitcoin exchange.
Is that right?