I have a Macy 's Credit card. I made a payment in full including the interest assessed on the balance on XXXX XXXX Macy 's charged an interest fee on XXXX XXXX XXXX XXXX and XXXX XXXX without any balance on the account, there was a charge in less than 30 days of additional XXXX $ on a previous XXXX $ interest- 100 % interest rate? Customer service has refunded the {$4.00} but ca n't give an explanation about how the recurring interest charge on XXXX balance is valid or reassurance that this will not happen again. 
