Unhappy customer

I’ve had a very very bad experience with Coolideas.. every day the WiFi has to go down for some unexplained reason. It was only stable for the first 2weeks. Then everyday for the past 4/5 weeks it’s been going down everyday randomly. The past weekends they’ve had “outages” that take up the whole weekend and it’s only resolved on Tuesdays. I can’t work I can’t use my WiFi as I want to. I’m truly unhappy. They never get back to me with feedback i always have to call them even though they say they will call.