Poor service received!!!

I payed off my student loan and all the charges that I wasn't even made aware of and after closing the account they continued to debit me..When I went to the branch to follow up on this matter I was told the acc was "partially" closed, but they will refund me within 24hours .Fine the notification game in but I didn't receive the FULL AMOUNT that they debited me...while I was not supposed to be debited in the first place!