MWeb fibre is even worst than Vodacom

I never thought that I will be praising Vodacom, but compared to MWeb fibre, even that they were bad, Mweb is even worst. I moved to MWeb fubre around 3 months ago. Their marketing department was full of promises, none true! I now get a slower connection throughout the house. I pay for 20 Mbps, but get between 0.4 and 14 Mbps. Only get 19 when my cellphone is right on top of the router. The explanation given: use a cable to connect your laptop to the router or buy a booster. What am I paying for ? Is MWeb going to reduce their fee to cater for the lower speeds? Or are they going to continue to advise to purchase different gadgets to actually get the speed that I am paying for? If their rooter is of poor quality, then it should be replaced by MWeb at no charge. They advertise for a service that they do not provide. This is false advertising and clearly cheating the customer.