Debit order reversal - balances NOT updated

I am extremely disappointed in FNB. Debit orders were reversed - but my balances on my Premier Cheque Account NEVER increased. Nothing has been updated as it should. You owe me my money back! It has now been 4 days...I desperately need this money to survive! I made quite a few phone calls and even contacted your complaints department! PLEASE FIX YOUR ENORMOUS ERROR AND GIVE ME BACK MYMONEY!