Not so good business

The past few months i informed Cartrack that i am not happy with the tracking device that they installed on my car. I gave them a list of things i need but they haven't addressed any of my them. I followed up many times but nothing happened. Hence Cartrack ignored my concerns, i decided to stop paying my account. Now they want to take Legal Action Against me. I don't want to do business with them anymore. Their contact number is ********** - contact person, Sonia Makhuwa.