Netstar refuses refund for incorrect billing

I contacted Netstar in June 2015 after their technician admitted that the tracking system installed in our chairman's vehicle in January 2014 had never been activated.<br> <br> Netstar says that the onus was on us to make sure the unit was active by checking it every 6 months, but we are with another tracking company with our fleet vehicles and we have never had to check that their system is working.<br> <br> I keep on asking for the voice recording of the activation of the contract because I want to hear that it is stated in there that the system must be checked every 6 months - this recording is not forthcoming and Netstar only contacts me when I threaten to post on social media.<br> <br> I feel that is only right for Netstar to refund us as they had no problem debiting the money off our account every month for a service that wasn't rendered.<br> <br> The powers that be high up in the credit chain at Netstar refuses a refund and it seems my query is a bit of a laughing matter to them - even the appalling bad service that I have received thus far.<br> <br> I am tired of dealing with the call centre people at Netstar because they don't care. And the manager that I have dealt with is not concerned either.