Vodacom theft

Hi my name is Faiza. I have had a contract with Vodacom which expired last year March 2020 and have since been up and down to the Glen shopping mall and I have called the cancelations online to advise them to stop debiting my account of which they refuse to do. Its been a year and I want my money back that they keep deducting. Every month I have been given a reference call no and promised that they have canceled and yet to find that my account has been debited my again. This is pathetic service all round. I want my year money back that has been deducted. Last spoken to Arthur ref no *** on the 8 April 2021 who promised to cancel. Its the 4th May 2021 and my account has been debited once again.