Deducting extra money and money after cancellation

I tried to cancel my cartrack account in August, but I needed my vehicle registration number. I then got it and cancelled my cartrack contract on the 11/09/'15. They informed me that in the contract it states that I must give 20 bussines days notice and if there is a debit order that must go through in that time it will. I excepted that. When I looked at my bank statement later in September I saw that they deducted on 01/09/'15 first the right amount of R131.89 and the same day R230.20. I then contacted them, they gave me the run-a-round of about 5/6 persons and 15 minutes, then cut me off. After calming down a bit I phoned again and all I got was a name (Stanley Motla) and he was on lunch. because I then had a short fuse when talking to anybody there I asked my wife to phone and every time they promise to make a correction on our account and pay the money back. The following wrong debit orders went through. 1/9/'15 -R230.20