If i can only withdraw in a few currencies, don't I need a foreign bank account for them?
Can someone answer this.
The currency you are withdrawing funds in does not matter. It all comes down to your bank and your current account: your bank will convert everything that comes in, in the currency you are using with your account, no matter if the funds are coming in as Yen, Zloty or Rupees.
This unless you have a multi-currency account: in this case - if you have for instance balances in EUR and USD - amounts coming in as EUR will be credited as EUR and amounts coming in as USD will be credited as USD without conversion.