Bad Customer Service by Vodacom Agents

On the 18th of August 2020, I contacted vodacom to request them to cancel a contract i had with them on my ***, as I had lost my sim card and was no longer using the services on the sim card, and was no longer interested in the contract, due to financial reasons. The agent informed me that the contract was actually due for an upgrade, but she will terminate as per request. on the 01st of September 2020, I got an invoice wherein I was billed for the ***, although I was assured on the 18th of August 2020, that the contract was terminated. I then followed-up with vodacom on the 02nd of September 2020, to find out why I was billed for a number I had cancelled and was assured that it was cancelled. The supervisor indicated that they will look into the matter and assured me that they would cancel, but that did not materialise as I was debited on the 15th of September 2020. On the 1st of October 2020, vodacom issued a statement where the same number ***) was billed, again I though the matter was sorted. I must say this situation is frustrating me physically, financially and emotionally, as I am not getting the desired help, and this is causing a financial strain in my life. I am really not helping with how the situation is being held, two (2) debit orders have gone through even though I had alerted vodacom on time to assist me.