No wifi from Axxess

I have been with Axxess for about 1-2 years, the first couple of months I had good signal and no issues, the past 3-6 months I have bought more data for my wives phone due her not been able to do her work on our Telkom internet we have with Axxess. Everytime I log a complaint they tell me to take 3 speed test and send it to them. I have done this so many times, I have done changes to my modem on their request then it the speed goes up for 2 hours and then drops again, I am in the market for a new wifi company that does month - month deals