WiFi intermittent

[LeanneCM]

My WiFi wasn't working, so had it upgraded.

it is now doing the same thing coming and going intermittently.

Usually going off for short periods but today alone it's been approximately 10 times. 

[ShotgunMonkey]

Same here. Upgraded to fibre 500 and I've hardly had any service all day. It's worked for about 2 hours and now my tv can't connect to the WiFi!