Vodacom failing to solve a simple error

I'm referring to a review (https://www.hellopeter.com/vodacom/reviews/vodacom-customer-service-failure-a8c9c9e641c1e275da022745ccfa32ee6d841ee5-***) I posted a while ago, where my problem was only partially solved.

The administrative side regarding the contract was resolved, but the financial side has just been empty promises. The lady assisting me with the administrative side noted that this will be escalated and that the financial side will be dealt with, and she would keep an eye on the case. This has not happened.

I have followed up with numerous emails to Fiona, but they remain unanswered. When phoning the Vodacom helpdesk, it is like starting at square one, even when having the reference number of the original case.

One gentleman was very helpful, and I received a phone call from a lady the next morning, but I was unfortunately in a meeting and unable to talk, but I did request that she phone me back later. She advised that she would phone me between 16:00 and 17:00 that day, which again did not happen.

I am now at my wit's end to get this resolved. It has been months now.