I Have been an ADSL customer for the past year and always paid £10 per month,any downloads I do are started after midnight and are finished before 8am. Service is ok but terrible at tea times every day of the week

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I just my new bill and its now £15

i popped along to the Virgin website
http://virgin.net/allyours/bbandphon...?buspart=buyat and I see the packages have changed, when I signed up it was unlimited (i know it was capped) but now they have solid limits on!.
My question is where do I stand, is my old contract valid or do i have to accept a price rise and a solid download limit?.
Oh and if the answers are yes can I get out of my contract with them?
I have tried calling them but they keep saying the system is down.
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