Poor Service and self enrichment

I had an account with Cartrack where we agreed on a 36 months contract,they installed the device which worked for less than 8 months. since then i was unable to login and monitor my car as agreed.but they have being deducting for something that is not working. i tried logging some calls for them to come help yet nobody came through.then i decided not to keep up with payments as i was not getting the service . now they handing me over. and i discovered they value money than their clients. all they care about is the money because if their clients is what they care about they could hand us over for assistant not to get money