Cartrack ******* Debit Order on Business Account

We are being charged without permission or a valid contract in place with Cartrack, every month Cartrack debits our business account on multiple occasions each time using a different reference number, R1000.00 on every debit. We have not been a client of cartrack since 2020, when our last tracked car was written off over 4 years ago, which we have informed Cartrack of on multiple times. We continue to contact client services, who are unhelpful, and have been passed from pillar to post. We have also requested their legal department to send us the signed contract so we can have this legally dealt with by our legal team, but all emails are ignored. There is no contract in place with Cartrack as the 36 months sign up timeframe period has passed. However, Cartrack continue to debit our account without permission, and every month it is increasing. Cartrack DO NOT provide any tracking for any of our fleet, as we were not happy with their services & constant debit issues. How are companies simply allowed to debit clients accounts, we have not been a client of cartrack for over 4 years? Nor have we signed permission for Cartrack to debit our Business Account. Do not sign up with Cartrack, you will be de*****ed by this Company for years to come.