Rain internet service provider pathetic service

I have been struggling for months without success trying to get this network to sort out my issue. I'm paying R450 a month for a service that is suppose to provide me with an internet service with speeds of up to 5mbps or something to that effect. I have done numerous speed tests on their own as well as other speed test applications and all I'm getting is 0.2,0.3 download speeds and uploads of 1.2...I cant even connect my wife's phone to the Hotspot because then everything slows down to a point where nothing can be done. I can't watch Netflix as it buffers every 1 and a half minutes, and when another device connects you can forget about any internet activity. They have no support for their clients and when they do eventually reply to an email sent weeks ago it's like an automated response of try another area in your home, reset your router, none of which solves the problem. There is no call Centre to log a complaint only a support function on their dashboard which in turn sends an email and the response time is 2 days to a week maybe longer. I will never recommend this network to anybody as it's pathetic how a company providing such a bad service can just take money each month and provide such poor outcomes for the people. The speeds that they advertise is not the speeds you will get, nothing even close to that. I would much rather pay more for another service provider and get better results than stick with rain that has zero customer satisfaction.