I have a £500 overdraft on my main bank account/debit card. I'm usually in it, and sometimes at the end of the month, I go over it by up to a £100. At the moment, I am £90 into my overdraft, and have a big sum of money going in next week. I am hoping to get to the bank on Monday, but does anyone know why my card is being declined? Is it because I'm in my overdraft?