Thats easy.
What you do is cancel your VM subscription and go with Vodafone (there are others) that are now offering up to 1gbps. I am in the process of changing my services and getting 500mbps for a far cheaper price of £35.
Sorry VM you have overpriced yourselves and now that there is more competition, maybe your ridiculous prices will come down.
Liberty Global now own Virginmedia and the recent changes reflect this. If you lose your service they will not refund for the loss of connection. They have really gone down the pan in recent months and I'm off elsewhere.
Take my advice and leave!