Vodacom bad service

After numerous calls about our fibre problem they have send a technician. Just to put in a new router. The person they have send does not even know how to install the beacons from vodacom. And we are still siting with a same problem. We have just called again cause its 5 min on then off. They told us its the xbox that puts the wifi off weve got 500 up and 200 down. How os this possible. Oh yes and we wanted to cancel but they told us then we will be without internet for a month cause they take a month to cancel. Vodacom please send somoene who knows what to do. And know there job. We keep on paying for ****ty services. Ive got so much ref numbers already oh yes and close tickets withput solving the probel. Everytime a new story.