Vodacom refusing to cancel contract to get more money

After multiple calls to try and cancel a contract that was originally canceled in JUNE 2022 I still had to pay this month again for a service I don't use I canceled this contract multiple time and still Vodacom doesn't cancel the contract and keeps taking money for a service I don't use.

Every time I ask for a reference number they can't give me one and promise to email it to me but I never get the email.