Contract price different from the pre-contract documents I agreed to
Hi, I'm moving house on the 13th May and pre-ordered a router to be delivered on the 13th to my new address. The package I ordered was the M350 fibre broadband with no extras. The price I was sent on the pre-contract documents is £28.99 for the first 12 months. But I have just been emailed the full contract and the price states that it will be £66 a month which was not what I have agreed to. I have never had to pay for broadband before so this is my first time setting up an account with any ISP. Therefore I am not switching or moving internet from one house to another. Please can someone help me as I do not want to pay £66 a month when I was promised £28.99. Thank you