Dissapointed

Good morning I had a problem where by I couldn't the location of my car in the app, I called in Netstar and a technician was booked, the technician came and took a look and i was there advise that the unit was changed because of water damage and nothing was said , was then sent an annual increase letter and a fitment certificate, nothing was said about the new unit i have to pay for its all new in my ears when i called in this morning, am very dissappointed R657 is a lot of money to be going out of my account without an explanation