My husband drives a BT 50 Mazda club cab

My husband drives a BT 50 Mazda club cab. Insured through Budget and has a tracking system through Cartrack for insurance purposes. When we had the tracking device installed. They tested everything on the vehicle. From wipers,horn,lights ext. And ticked a list of everything that was in working order. I received a copy of this list stating that everything was working. They proceeded to install the device. I day or 2 later when my husband and I went to town we realised that the wipers no the horn on the bakkie was working, that means the alarm does not sound either. I have tried to contact cartrack many times and gets the same answer someone form the technical department will contact you mam. Till today no results. Can you please assist me with this matter. Much appreciated