if you’re facing trouble in dialing or receiving any calls, from the sky network, then the first thing you should check is whether there are any problems with the Sky’s network. More detail here
Common error while sending sky email
Errors when sending email
Error of the web browser
Error when you send email via an email client
Step by step guide to fix sky on box demand problems for wired connection as well as wireless connection here
There might be a number of factors which may interrupt all the signals being received by your Satellite dish like bad weather, loose cables or obstructions. Detail guide to fix your Sky signal problems here http://www.fixithere.net/sky-customer-service/how-to-fix-your-sky-signal-problems/
Quick steps to fix Sky Internet Problem
Shut down your Webbowser
Switch off the router and then on again
Restart your browser
Guide to fix sky broadband security problems for different browsers such as Mozilla Firefox, Google Chrome, Internet Explorer and Safari.