*****ing my money

I cancelled my tracker contract mid September 2015 when I sold my car. I was told someone from tracker would callme to finalise the process. According to Tracker's records they tried calling me, once, in September however they could not reach me, so they decided not to cancel the contract. I was only alerted to this fact after calling them as they processed their debit order for October. I was also told it is a cancelation is a calender month process and , again, someone will call me to cancel. No one called me the whole of October, and again another debit order has gone through my account. I now have to call them again and hope they process my cancelation. If they decide not to call, it seems they will debit my account again until the day they decide to call me, which at this rate, may never come. If they want to cancel the contract at their initiation, they need to call me until they find me, else they must terminate the contract when I call them. With their current system they ***** money from former clients and right now, in my opinion they are *****ing my money because from side I cancelled the contract in September but they continue to take my money in November.