5.21 mbps on 70 mbps service. This is nearly every night now despite being told the engineering work would be completed on the 21st December (work began in April 2016). If VM can't give me the service i'm paying for they have no business taking my money.
If VM are 100% at fault, utilisation (over subscribing) is their problem, then make a formal complaint with VM, after 8 weeks if its not resolved take it to CISAS, follow my simple guide to make it easier.
You can, if you provide enough evidence to CISAS you can get up to, if not more than 50% of your BB costs.
Thanks for getting in touch and apologies for the peak time slow speed issues, I can see that networks are currently working on upgrades in the area, ref F003632511, hopefully you'll see some improvements as a result over the next week or two.