Horrible service

These people recorded my number as my brother s number and possibly his number as mine. I had a device installed 10 january and upon testing it 2days later they called my brother instead to check if vehicle and i was okay & he told them they calling wrong number so when he told me i tried atleast may 12times to call and ask them to change the number i didnt win because whoever answers the phone tranfers you to someone & you can be transfered more than once only for the last person to pick up the phone say "hello" and drop the call & sometimes just answer and drop without speaking. so i requested a cancelation of their services and all they did was send me invoice of the month of Jan (actually with a wrong amount of 350 cos i signed up for a 300 package) nothing about cancelation so i tried to call them again still same thing. its painful to have someone just end the call after 15min + of holding you ve taken your time out of the day yo give them some attention. then i went to the website and requested cancelation again, they responded to my email 17days afterwards with just an invoice for the month of jan nothing else. First of all agreed mode of payment was derbit order but that was not done & yet they send me texts that if i do not pay debtors whatever etc. So i must with draw the money go to the bank and pay them like its 1999?And Now i must pay for this kind of service wher they can answer a simple call nor attend to the problem which is simply put the correct information. how can they track vehicles if they cant answer calls? How can they track the correct vehicle if they cant record the correct cellphone number.? So im in a contract with a service provider whos made so many promises to me including arranging towing and taking my phone and fixing cracked screen but i cant even contact them neither do they seem to understand my email when i say hey change my number or please give ne a bill/for cancelation instead they insist on sending me invoice of the past month/s which i do not have a problem paying and which they are not even derbiting from my account. but I JUST DONT WANT THEIR SERVICES ANYMORE. on 1march I sent an email to about 6 of their contact emails requesting cancelation & today all i got is am invoice for jan and feb now its 600 for 2months but earlier it was 350 for jan only, nothing about cancelation just the invoice. The service s horrible im glad i did not signup my business vehicles with them cos i can only imagine . I dont want their services anymore because its just a guaranteed wastage of extra time tryng to comunicate with them we also have better things to do.