Debits made in perpetuity without contract, or service or product provided

Telkom continues to debit my account without any contact existing between myself and Telkom, and without any service or product being provided to me by Telkom. I request Telkom to provide evidence of any contact existing between myself and Telkom. I request Telkom to cease debiting my account. I require Telkom to refund me for its ********** debits over the past 4 years. Thank you.