Heartless FNB

The worse experience that I ever had to go through in my life was when FNB personal loans debited my account 8 times leaving my account on a minus figure..not having any money for my groceries or kids essentials. When I called the call centre on the 26th and 27th of June they said it was an error and that the money will be reversed into my account which hasnt and I am still waiting!!! I called the reversal department was on the phone for 2hrs an according to them no reversals were done on that loan account aswell as when then put me through to the loan department after holding on for another 1hr I was cut off... I WANT MY DEBITS REVERSED AS PROMISED as my kids have nothing for the month!!!!!