Tracking fitment blues

I have been waiting for almost a month for a technician to fit a tracking unit in my vehicle with weekly follow up calls and Cas numbers. Netstar owes me a years monitoring which I had paid in advance and changed my vehicle. They want to now charge me for a new unit instead of transfering my old unit from the vehicle I sold, I agreed to pay the nce off R650 but I am still waiting for Fitment, Nestar will be held accountable should the vehicle be ******.