Contracts Termination Telkom

I had a data contract with Telkom which ended in August 2021,however they continue to debit me having no data bundle.I went into Westwood mall, Phoenix Telkom and Overport city to confirm cancellation.They double debit me X4 amounts when I did a reversal.On enquiry I was further informed that a final debit will be done on 31 January 2022.,but on 14 January 2022 they debit my account.Their modus operandi is reverse that debit orders they will double debit you.Disgusting behaviour from a professional company.This is ********