It sounds as though it's not gone through correctly and you may be paying full price for being out of your fixed price deal.
Did you get confirmation emails?
Did you renew online or over the phone/ Chat?
My Account should indicate what contract you are on, or whether there is no end date.
Chat may be able to help over the weekend, from links on this page:
Or wait until staff get back on Monday. Please complete your community forum profile details for them to identify your account. Go via your avatar/name; settings; launch profile wizard; make sure you put in your landline phone number and a fallback mobile phone number; click finish to save.
Thanks for your post, sorry that you are having problems.
If you would like us to look into this, please can you update your community profile to include your home telephone number, we will then be able to have a look at your account.
To do this go into 'my settings' then 'personal information' then add your details.