Tracker refused to stop debiting my account

Im really fustrated with tracker, Ive spoken to the tracker agents over 5 times to cancel my tracker .<br> I do not own that vehicle it has been sold in March.. and my contract was over as well.<br> The agent that called had promised to resolve this problem and told me that I will get a refund for 4 months.<br> I even mentioned that I would need a new tracker installed in my new vehicle..she mentioned that I will get a call the next day from a sales agents...... Im completetly unsaisfied with this pathetic service...Im furious that my money is being deducted without authorisation.