Vodacom Terrible Service

I was contacted in October by a consultant from Vodacom re night time data that has not been used and he requested to convert it to day time data for a minimal fee. I was astounded by the gesture because I wasn’t even aware that I had night time data and the fact that Vodacom was “concerned” that I’m “wasting” data and money. I haven’t received any notification further on and in December 2022 I realized that I can’t make a call to by brother in Australia. I tried calling Vodacom but was on the line for 15 min without any assistance. In January 2023 I called only to find out that my contract has been changed from Vodacom VIP Red to a Top-up, which I authorised and the more I explained that I would have been stupid to change my contract the person on the other end said that she couldn’t assist and transferred me to Sales/Contracts. I was informed that they will investigate and will get back to me. In February I tried again with no positive outcome. It is now the end June and still nothing sorted with my account, and I can still not make any international calls and every time I tried to sort it out Vodacom will need to investigate and get back to me. I haven’t authorised this and yet I’m struggling to get my contract changed back to VIP Red. There is no email to log a formal complaint and I’m paying monthly for a Top-up which I haven’t signed up for!!!!