Did you check your bank statement and see if the transaction went through? If it did then you are entitled to the winnings. Sometimes it does take the processor awhile before they put it through to the bank.
If the bank declined you after initially approving it, it's not the
bingo sites fault it's your banks fault. It's like any other purchase, if you go buy a TV online, go to the store to pick it up and they tell you the transaction didn't go through, they are not going to let you walk out of the store with the TV.
I would be hollering at your bank!
Lips