WHO THE "F" in VODACOM do we need to speak too, to assist with cancelling a service I NO LONGER REQUIRE.

Who the "F" in Vodacom do you need to speak too, to assist you with having a contract cancelled. Over 20 reviews just today on hellopeter with unhappy, unsatisfied customers to get contracts cancelled. I cannot believe that it's an impossible task for a multi billion rand business to have so much red tape to assist me the customer, to cancel a service I no longer require. My contract expired on 7th October 2020, I no longer require my R1200 p/m contract, I would like to cancel the contract and do not want any other fees to continue as of May 2021. How am I still legally bound to the contract that already expired in October 2020 ? Any attorneys that can advise. The signal in our area for Vodacom subscribers are almost non existent, we struggle with signal and miss several calls due to almost no signal, this is one of the reasons why I would like to cancel and move over to a different service provider urgently. WHO THE "F" in VODACOM do we need to speak too, to assist with cancelling a service I NO LONGER REQUIRE.