I cleared the entire balance on my husband's AIB credit card last month. This month's bill has come in, and has a €16 charge on it for interest on purchases! Even though it also shows that last month's balance was cleared! Obviously they won't speak to me as it's in my husband's name. I got him to ring, but had to go out while he was on the phone. He says they told him it was interest on something from the previous month. But to my knowledge, when you clear the entire balance then there is no more to be paid? He won't ring again and says to just pay it. Could this possibly be legit?