Miway and car track ****

A condition of cover for our van was that we have a car track unit installed. A clause in the contract is that if the unit is faulty and we don't check regularly or have it fixed, we will not be covered. We have tried multiple times to have our unit booked for repair but with no success. We are paying a huge amount for both business and personal insurance but are not even covered due to faulty 3rd party equipment which we were forced to get!