Really sorry to hear you're experiencing speed issues.
I've located your account and I can see an issue with the network in your area affecting speeds at peak times - Ref.(F005176088). Our technicians are working to get this resolved and have set a review date of 6th December 2017
I'm really sorry for any inconvenience this may cause.
All the best
Tech fan? Have you read our Digital life blog yet? Check it out
If VM aren't even going to review your fault until December that's crazy! I think you should at least press them for a discount due to diminished service ... or give them the old heave ho. There's no way they can hold you to your contract if that's the best they can do to fix the problem.
"Cable broadband is typically faster than copper-based services, but a significant minority of users experience severe slowdowns in peak times." — Ofcom, UK Home Broadband Performance, November 2016