Pathetic service from Cartrack

I am an existing client and have 4 vehicles currently with Cartrack but recently I find there service very poor and pathetic and the staff is very ***********. I purchased a new vehicle they sent a technician Darren to fit the unit and he was dirty and smelly to be honest and when he was done he left and I took vehicle for a test drive and immediately it didn’t pick up a signal on the app. I immediately called tracker on Monday March and laid a complaint and they promised to come sort out the matter. It’s a week now and no one called or came and when I call they don’t have any answers for me but rather say I must pay R600 for a call out fee. I’m done with them this is poor species and no one cares as the managers or supervisors is never available