Complain

I cancelled my contract ***) cell ***) at Telkom shop at mall of Africa after it was expired in May But i was still getting billed , on the 05/10/2020 I call 081180 for help i was told that the contract was not cancelled i was told to call the billing department for help. today i called billing i spoke to the customer service by the name of Phumla Vilakazi i explain my problem to her by she was not help full at all , then she can't help I have to pay the is nothing Telkom can't do with this because i went to the wrong place for cancellation, I just need a department that can help me because i can't pay for a service that I didn't use because someone didn't do his job.