APPALLING WORST SERVICE FROM NETSTAR

I would like to report the horrid service I've been receiving from NETSTAR car tracker, I had an accident in December and my vehicle was written off and I later notified NETSTAR in January 2023 about the accident and that the vehicle was written off and I spoke to one rude agent who wasn't willing to listen to my plea that I need to cancel their services. I let it go that day and on the 2nd of March I received a call from another agent from NETSTAR letting me know that they've noticed that my car is written off and they're willing to cancel my tracking device but I need to send an email stating that I want to cancel the subscription which they never canceled. I phoned again today on the 17th of March seeking assistance that if they're not going to cancel my subscription atleast let them add my new vehicle to the old account but I'm told that I need to pay R1200 to cancel my old tracking device on the old vehicle and pay again another R600 to add to my new vehicle, I spoke to another rude agent again named RAYDINE whom also refused to let me talk to their in charge supervisor in order to deliberate the case further. I asked for the case number to the call in order to follow it up later but she also refused to assist me with that request also and rudely stated that I need to just keep paying for the services which I don't even require or need.