Cable Forum - Virgin not Honoring Contract

Hi i am fuming

I moved to our new property and had virgin install tv phone broadband, then i saw a ad for a mobile sim. Great rung them up did a credit check passed great so 1 ordered the monthly sim great

unlimited calls, unlimited texts 1gb data for £8 there advertised offer

First payment take out, had the contract for over a month

Now not so good part i received this email today im fuming

Hello,

We've spotted a mistake and we?re about to fix it.

After your recent order with us we?ve done some further checks and
noticed you?re not actually eligible for the discounted Mobile SIM
tariff you signed up for.

This means that in the next 48 hours we?ll be moving the mobile number
below to a similar tariff, just at a slightly higher rate. Don?t worry ?
you?ll get exactly the same data, minutes and texts allowance. Your new
monthly rate is £14.00

Mobile number:

What happens next?
You don?t need to do anything ? we?ll make the changes at our end within
24 hours. After this, you?ll get two texts from us: one to say we?ve
removed the wrong tariff and a second to say the new tariff is up and
running.

Can they do this?

Just a update

I contacted Virgin they were not willing to let me stay on the bundle for £8 so i refused to pay £14 and they have cut me off straight away

How can Virgin cancel a contract because of there mistake but i cannot cancel my tv broadband phone package????