Ongoing double debit orders for 3 months despite Matrix confirming vehicle removal

I am extremely frustrated with the service from Matrix Vehicle Tracking. For the past three months, I have been trying to cancel the tracking service for one of my vehicles. Every time I contact customer support, the consultants reassure me that the vehicle has been successfully removed from my profile and that only one vehicle remains active on my ***. However, their system tells a completely different story. Despite their endless verbal assurances, my bank account continues to be debited for two vehicles month after month. This has been going on for three consecutive months now with absolutely zero change or resolution. It is completely unacceptable to be charged for a service I have repeatedly cancelled and been told is removed. Matrix, please sort out your billing system, stop deducting money for a non-existent tracking contract, and refund the overcharged amounts immediately!