Very slow fibre connection

Vodacom Fibre speeds have decreased to such a point where it is almost 10% of what it should be. Various calls, various emails with screenshots, and no reply or solution provided. I joined Vodacom since I believed their infrastructure would be the best in SA, but it seems my assumption was wrong. Strange how the service was working 100% as expected, until a few months ago, it all went downhill. Please do not say someone will contact me, unless it is with a solution or a cancellation form.