Netstar is doing *****!!!

Netstar is *****ulent!!! I sold my car 4 months back and change of ownership was done with the owner.the ownership of my Netstar account was transferred to the new owner but they are still deducting my account and sending me statements!!!...I regret joining this tracking company !!! They are ****mers!!!...last time I called them and asked why they said it was an error but they are still deducting my account!!!😡😡😡😡😡😡😡