Vodacom pathetic horrible services

I decided to cancel my vodacom contract number *** in February 2021 but unfortunately until date vodacom pretends to have resolved yet they debit my account with more date.They decided to increase my monthly payment from R108 to R230 without my authorization.Currently l have spoken to more than 10 consultants and managers who to me appear ***********. I feel it's a day light ******* what vodacom do by debit my bank account without my authorization. My vodacom reference number is ***,am very disappointed with vodacom pathetic poor services