Poor service

The worst service ever I called in last year from September to cancel my contract and no one is cancelling my contract, cartrack have been debiting for more than 6 months after cancelling and I reversed the premium last month and they started calling to collect the money I reversed and no one is willing to listen to me that I cancelled the contract last year. I did write a review last year someone called me and said they will investigate why my contract was not cancelled and till today I'm waiting for him to come back to me. I was debited again this month of March ***0864