VODACOM ********LY DEBIT MY ACCOUNT FOR +/-13MNTHS

hello, my name is Zama. I have been a customer for Vodacom for years and been fine with their services all these years until I received a call from their call centre people offering me a service I regreattably took in 2018 around Feb. I have called Vodacom a countless number of times last year to cancel this subscription TECHTRACE but they are still debiting my account its been well over a year now. I need Vodacom to cancel this service and refund me the money they have ********ly debited from account for a full year im sick of calling and not getting proper help