Hi colinwebb,
Thanks for your post and welcome to the Community Forums. Sorry to hear you've been having speed issues.
Our online service checker and diagnostic should be able to check if anything is happening with your connection https://virg.in/servicechecker
How has your connection been since your post? Can you tell us a little bit about your set up? Are you using wired or wireless connection? What is the the Volt speed you were offered?
Cheers,
Corey C