I regret going for tracker!!!

I have never imagined to receive such a service from such a big company in SA.Firstly I had been paying my tracker every single month from the month I bought my car and when my car went missing the tracker people could not even locate where the vehicle was.Wow so much for a tracker company.Nonetheless,after 6 months that's when they only realized their tracker was faulty.i was called by a lady informing me that it's faulty and they will send a technician to my house for free to fix it since the fault was on their side.i agreed.after a month I receive an sms stating that my account is in arrears by 1400...how so if I have been paying every month.i called them on the 6th of Feb nd they had no answers for but said will call me after 3 days! Well its March already,no feedback @ all..instead I received an sms saying my tracker is suspended...I'm quite shocked by such incompetence nd failure to resolve a simple client dispute,never mind giving feedback at least!!