Treating your clients like trash

I'm so disappointed I reported to tracker on November last year that there is a problem with my unit. November and December money was deducted while the unit was not working had no notification from them what so ever to an extent that my car even crossed the boarder of south africa and Lesotho without hearing anything from tracker they only attended the situation when I reversed all the funds they have been taking without rendering any of the services I'm paying for. After they worked on the car my car would show on the app that it was in motion while parked. Today I tried getting hold of them unfortunately the consultant on the other side just took my number and said they will call me. I have been trying to communicate with them sending them email but no luck. I'm so disappointed that in this unsafe city that I must guard my vehicle while paying a company to render services that they are not. To my surprise I have also been Billed for this new unit of their that is malfunctioning. If you guys can't render services to you clients just inform us there are many other companies I can take my business to which I will get value for my money