No response for 15 months

I have been paying for a service for the last 15 months for a vehicle that was sold. Prior to the vehicle being sold I contacted Cartrack to advise them of the sale of the vehicle and for the device to be transferred to another vehicle. I have the email communications sent to client services but no action except for an automated response.

I have held up my end of the contract by paying every month and find it extremely unacceptable that Cartrack does not hold up its end.