Worst service ever

I was contacted cartrack to have a divices installed, I was then told about all other options I opted for the backup unit with dashcam. While instillation taking place my windscreen was broken I had to fight to have it replaced. I was inconvenienced managers were rude I decided I do not want the divices anymore and I was within my cooling off period so I have the rite to cancel the contract. Cartrack debited my account for a divices that's not active I returned the debit order and they keep debiting my account for something that's not working that's not activated. I tested the unit in my vechile and a robot called me that I need to press option 1 2 or 3 and to date no one can answer as to why I need to speak to a robot and not a actual person what if my car is ****** and yet a robot calls that I have to select options.