Cartrash....still

It's been a few months since Cartrack installed a faulty unit in my car, costing me an additional 1300 to replace my new battery prematurely when the damage was already done. It's been a few months since the cartrack technician (Angelo Motena) disappeared with my fuse box cover. It's been a few months since I got a far-from-sincere apology from the Cartrack team about these blunders. One thing they will do, however, is call, nagging about payments and making threats via email whilst my fuse box cover still hasn't been returned. It's been a long time since April. It will be July in a week or so. I'm not paying until you return what you stole. Must I open a case to be taken seriously? *** is wrong with you people?