Multiple debit orders

I'm very angry at the incompetence of the aa's debt collection dept. my debit order of R 142.00 was rejected at the end of month and i penalized by my bank to the tune of R139.00. Another debit was put through on the 1st of Feb which was also rejected and a further charge of R 139.00 due to unpaid debit order was debited by my bank as penalties. I was subsequently contacted by a lady from their credit control and i specifically told her what happened and instructed here to send the debit on the 25 not before or after. To my surprise another debit of R142.00 was sent again to my account this morning and that was also reversed to the tune of R 139.00. Now i owe my bank Over R 400.00 plus the original subscription of R 142.00. I have sent an email to the AA's head office but i have never received an adequate response. No where in the contract that i entered into said anything about multiple debits. I therefore request that the charges be refunded. Alternatively i will be filling a report to the office of the Commissioner of the NCR. This is a ******* and i would also like to cancel this membership if an agreement entered to by two parties will be bridged in this manner.