CARTRACK are ******* !!!! dont ever make the mistake of signing any contract with them

Cartrack are a bunch of *******!!! They have debited my account twice with two different amounts. I have never consented to the second debit order. How can businesses do this people and get away with it ? I try calling they tell me they going investigate and come back to me and they never do. the service is absolutely pathetic an the consultants dont know what the hell they are doing half the time they sound like they just woke up from a deep sleep.