Netstar do not care about their client

I wrote a review about Netstar, instead of them rectifying what they did, NO they sent a text stating that my account is in arrears with R949.19 and has been handed to Creditworx for collection. This is what i am going to do, i need them to come and remove this ****** tracker from my car, i don't want anything to do with them. I am going to stop all the debits from that company, i will deal with the consequences thereafter