Cartrack unauthorised debit

After struggling for 2 weeks to get Cartrack to move a unit to a new vehicle (which was never done), they still invoiced me for this work. After numerous requests to cancel all accounts, they still debited my account without authorisation for this "work" done, which was never carried out! Absolutely shocking. It's impossible to get in touch with anyone at Cartrack, and if you do speak to someone it never gets resolved.