Vodacom Fibre Bad Service

I am having a serious problem with Vodacom . I was upgraded from 25Mbps to 50Mbps and I am still not getting the of 50Mbps speed . I logged a ticket SR*** slow internet speed with Vodcacom on the 2/06/2022 and as of today I have heard nothing , Every time I phone Vodacom I get told that they will give feedback on my slow speed query and nothing . This is unacceptable as my wife has being with Vodacom for many years and this is how Vodacom treats their customers. Please can some assist me Urgently !! as this going on for too long now Contact no ***)