Welcome to our forums and thank you for your post. I'm really sorry that you've been having trouble with your wifi signal, we can certainly see what we can do to resolve this for you.
In taking a look at the backend of your services, I've been unable to identify any cause for concern with the broadband entering your property. It does look like there may be some issues with your in-home wireless network though. It may be worth taking a look at our WiFi Wins for information on getting the best out of your wireless connection.
Do you know whether wired connections are also affected? Do the lights on your hub change when you lose connection?