Webafrica- i am troubled

Long standing client. Four weeks ago upgraded to higher speed, quick to register upgrade and start billing me, but speed on my original package drops. Upgrade and get less. After endless whats app discussions and asking to speak to someone that has the capabilities of helping me over three weeks, they decide my old router has got to go. Received new router last week and speed was better. Over the past few days back to speeds half of my original package. Today i was dropped three times by the technicians answering the whats app, the only way to communicate with them. No closer to a solution four weeks later. In conclusion- if you complain the operators on the whats app line do not want to deal with you as they do not want to deal with a difficult problem or worse still, they want to offload me as a client. They will quickly sign you up with the new package offered as a new client, but as a client with them for over twenty years, no mercy. Based on my experiences i would strongly and honestly be vert wary with signing up to Webafrica.