WiFi not working despite connection

[Carolinekain]

My WiFi has been playing up recently. It will work fine then disconnect for 10/15 seconds then come up for 5/10 mins and go down again. This will go on for an hour upwards. However, when I test my connection it says there is no issues with my box or in my area. This is becoming a hindrance to my work. 

[Bangles]

I have exactly the same problem, it always starts around 4.30/5pm, every day, I also do a service checker and it says there are no problems. It's becoming very annoying, we end up just turning it off and watching normal telly. If I could cancel I would, it's a dreadful service, after searching for an actual phone number to talk a "real person" instead of a robot, I will be ringing them tomorrow, we are paying for a service we are not getting.