Disgusted at Vodacom Cancellation Service

I had a data contract which was supposed to run to over the course of 2 years and expire in September 2021. I was under the impression that the contract would expire by the end of September 2021 however I noticed the debit orders still being deducted off my account by Vodacom the following month. I have queried this and taken it up with Vodacom on a monthly basis since September 2021 and made my intention clear to have the contract cancelled as its past its expiration date, however the debit orders have not stopped despite my desperate attempts to this extent. I have called all customer care and cancellation lines and do not receive any feedback at all. I cannot afford these debit orders any longer and am disgusted at the level of service received from Vodacom! K