Maybe that one will help you guys?? I've just sat across from a work colleague whose been on the phone HOLDING to speak to someone for over 20mins and he's being threatened with legal action for a service he doesn't even have! Terrible terrible customer service...
I did a google search for an email address for SP and this one popped up straight away. Good luck to anyone trying to contact them!
Try: - firstname.lastname@example.org
Their postal address is registered as:- ScottishPower Energy Retail Limited, 320, St. Vincent Street, Glasgow G2 5AD
...but it's highly unlikely they'll be bothered to respond to anything sent there.