We purchased our RRS in December 2006 from Stratstone Mayfair and had a Tracker Horizon fitted with a Duration subscription (lifetime of ownership) paid to Stratstone with the total invoice, cash.
During the last three years we have used the certificate supplied by Stratstone confirming Tracker Horizon and Duration subscription when insuring the vehicle with three different insurers.
In the last three years we have contacted Tracker a number of times changing contact numbers whilst we are away on holiday should anything happen to the vehicle.
In October 2009 whilst on holiday overseas our RRS was stolen from our drive. Tracker would not turn the tracking unit on as they said the subscription had never been paid. Tracker would not accept payment then as it can only be paid before the vehicle is stolen.
Stratstone Mayfair say they tested the initial install correctly which would have generated an invoice which Stratstone would have definitely paid on block but they cannot identify the individual payment. Tracker say they never issued Stratstone with an invoice as Stratstone didnt tick the correct box on the installation document.
After some considerable communication at Managing Director level with both companies I remain stuck in the middle with no real answer. The real scary thing is that had I lost the vehicle totally (it was recovered) I am sure the insurers would have said the policy was dependant on the vehicle having a working Tracker and therefore I would have found myself uninsured with a loss of a £50k vehicle.

I have advised both companies of my intention to publish our experience, as there may be many others out there that 'think' they have a Tracker on their vehicle.

Might be wrong - but surely your contract of sale is with the Dealer for both the car and the Tracker? Therefore the dealer should be wholly resolving this for you, particularly if they (the dealer) invoiced you and you paid them (the dealer) in full. Use your consumer rights and the consumer law here, its sounds unfair that the dealer is playing you for piggy in the middle. In my limited understanding THEY (the dealer) should be solving this for you with Tracker, as they sold the Tracker device and the subscription to you.

I'd start by asking for a full refund for the Tracker Unit as they have not fulfilled the contract of sale they have with you to supply you with a working Tracker with Lifetime subscription. Maybe you could even claim a refund for the car if you stipulated that the car had to have working tracker with subscription as part of the contract of sale of that!??!?!

PS: These are just some thoughts, I'm not an expert here, and this is just my opinion, and its your prerogative as to what you do John - best of luck getting a solution!