My contract expired 4th December. I notified them a month in advance on multiple occasions that I intended to leave. Every single time without fail they ignored what I said and tried to sell me upgrades and new packages. I was also told that my new provider contacted them about the switch (I received emails from both Virgin and Sky confirming this). They then charged me for the month of December, after my contract expired. Not only that but about £40 more than the monthly value of my contract. I was furious and left a complaint. They replied that what they have done is legal and asked me to pay the bill. Because I did not want to go through extra hassle I just paid it. Now they have sent me another bill for the same amount for this month. I'm not sure what to do. I don't want to pay it and cannot really afford to pay it. I am devastated and wish that I never signed up to Virgin's internet. How is it legal for them to keep charging after your contract is expired?