Cartrack doesnt pick up that a unit doesnt work for over 11 months!

I have been a loyal CarTrack client for multiple years. I request a travel log yearly for tax purposes. When I requested one this year (07/06/2021 12:13) they sent me a report that only extends to 24 August 2020 and not until 28 February 2021 as requested.

When I queried this, Cartrack's response: "Please be advised that cartrack does random tests, as per the terms and conditions its the client responsibility to test the unit."

So they only picked up that my unit was faulty when I requested a travel log. Meaning their 'random tests' are more than 10 months apart?!

In the past I would frequently get notifications of random checks confirming that the unit was working. Why are your random tests so far apart now? And furthermore Cartrack is supposed to pick up that the unit is no longer working as in a scenario where it is being tampered with and communication with the unit is lost.

What have I been paying for for almost a year? how is a non-functional unit not automatically picked up by Cartrack as it was in the past when my vehicle went in for a service and they temporarily lost communication with the device.

Unacceptable, poor service from a company which is supposed to help protect their clients and their property.