Bring back my money!!

I'm a customer with car track. In the month of June 2018 I made a direct deposit for my account with cartrack since I had missed a payment the day before. I was then contacted by a call centre agent who gave me cartracks banking details and the payment was made the day after. To my suprise money was debited from my account in the same month. I then contacted the call centre and spoke to Masego who promised to look into this matter and get my money refunded. To my suprise there was no money refunded into my account. Money was debited for the month of July, August and September as usual. Then at the beginning of this month when the debit order went off it was more by R50. No explanation was given to me about this. Still have not received my refund from July and when I call in I'm promised that someone will look into it and it never happens. Very frustrating to say the least.