Bad service

Good I would like to express my feelings regarding the bad service I'm getting from Cattrall I have two vehicles that I have cartrack units and on the 17th January this year I have called cartrack to inform them that I have traded in one of my cars and I have a new vehicle that will need the car track unit and I gave them the car details and everything and I was told that I have to pay an amount of R870 and someone will call me to schedule to install the unit on my new car so I did this before pay day which is 20th of every month and hoping they will debit the amount then but they only debited my premium amount only and no one called me, and I have been calling their scheduling department but no one picks up and got a call few days after 20th of February to after another debit order being made and no one called to alert me on the R870 that was debited while my account did not have enough funds to pay that amount and now again after so many unsuccessful calls to scheduling department I get a call from a lady asking me to debit on the 20th March and I agreed and she told me someone will call me after to schedule the day to come and install the car track and on the 20th of March they debited both my premium and the R870 and even today on the 25th I haven't received any call from them even after calling them yesterday asking to get someone from scheduling to call me, so I'm not happy with this I'm driving a car that doesn't have a car track unit while I have been paying since I got it and I wonder what will happen if my car get ****** how will they track it down and I why am I paying for services I'm not getting.