Worst tracking device service

i am currently having the worst experience with netstar. i was using their services when i had a vehicle, it has been more than a year now that i have lost my vehicle and i keep on getting statements from them that i owe money even thou after i lost my car i immediately notified them to cancel my contract with them , i have spoken to multiple agents at their call center who keep on telling me that the request for cancelation has been received but never processed and keep on assuring me that they are escalating the matter..

until a month ago when i received an email from Nimble saying my account has been handed over , i them called their call center again to do a follow up, and they assured me that they will inform nimble that the contract has been cancelled,. but still received statements that i owe them, of which i did call again to ask what is going on .. i spoke to an agent by the name of Ziyanda who was also very useless and couldn't help me , she doesn't even respond to my email and im still sitting here with an unresolved matter and nimble calling me for collections , i would not recommend netstar to anyone , worst part i referred 2 of my colleagues to them , i told them about my experience and advised them to immediately cancel and look for other tracking companies because i don't want them to have the same horrible experience that im currently having .,.

this has been going on since last year november and im still not getting assistance , im being sent from pillar to post and every time i call in i get an agent who is clueless and apparently dont see then notes of the previous agent i was speaking to, their service is disgusting.

Not even their legal department is able to assist me with this matter

they should treat their customers better