The worst service ever.

I have received the worst service from Vodacom. Firstly, we were paying 1099 for a 50mbps line, and from the start, we only got 10up and 20 down. Next, we have been calling your company going round and round sending screenshots, getting promised to get the bigger line and to be reimbursed for the incorrect charge. I have been waiting for 5months for Vodacom to do something. Nothing has changed. Eventually, I canceled because of this terrible service, and am waiting to get disconnected from Vodacom so I can install with a different ISP. And now they are saying I have to pay to be disconnected. How much more money do they want to ***** from me. I have taken screenshots for them to show the line is still not fixed over the past few months with zero results, and zero money paid back to me. We have logged so many service requests and it is always the same story. It gets logged, then without any action being taken the request is closed. And I receive no feedback.