Netstar rip people off and they don't care about their pathetic service!

Initially when I joined netstar, I was told it's a 3 year contract.. I asked what happens if I change cars, the consultant told me they'll transfer the device from the old car to the new one. Now I've upgraded, and traded in the old car, I then called, before fetching the car, 3 days in advance, they said a consultant will call me, I gave 2 contact numbers, but the consultant called 1 number, failed to reach me, then left my case.. I called 2 days later, only to hear they never got hold of me on the 1 nr, never bothered another nr. Anyway I made another appointment that Friday and they said on Monday.. They'll be there at the dealership, exactly at 1. Waited, no one called. I called again on Monday asking what's happening as I was waiting, no call from netstar. They told me the person I spoke to is on lunch until 2pm. I must wait until they get back from lunch, I called again, wanting to cancel my contract, as I'm only left with 12 months and I feel I can't take their incompetence anymore, I was told cancelation is +-R1200. And they told me, they don't transfer devices, they bring a new 1, which I'll pay R650 for and my normal debit order of R280. A device can be transferred, but they say it can't be transferred, I must pay for a new one. I'm being penalized for upgrading a car. And sadly, I waited for a call the whole day after calling, and talking to 2 consultants, who told me they'll get someone to call me back urgently. I've already paid for an old car, paid for a device that's in my old car, a car that's driven by someone else. I don't have a tracker, but my account is debited. And nobody cares that I need a tracking device. I can't cancel or get a new device, yet my contract is active with netstar. I thought they were the best... But their service stinks!!!