car track

Hi took out a comprehensive policy with king price little did I know what I was getting myself into the stated I need to take a tracking unit cause my car was high risk no further explain was done but was made to agree to a deal they claim they have with car track no cancellation fees was explained or terms and conditions when car track technician came they made me sign a small document which the get gentle claim he stated that he came to fit the device they claimed I was emailed the policy which I never received now car track say I owe them 4500 for a product which I did not ask for but there was a clear sign of force majeure from the sale agent from king to take the car track product the was no cooling off period for me to think about the product if wanted to take out service provide on.cartrack ***