Matrix is a ****ming business

I was phoned to day about being behind in payments on my matrix account I canceled the account I did the email and I phoned to cancel a year ago but now it still active and now they say I o2n the 2000 plus rands can't understand how they work I was ****med by the sales person when the phoned me he said it a upgrade on my tracker system I said it's fine upgrade it and they dit put a new system in my car I didn't sign anything