I have been on a fixed price deal with eon which is due to come to an end. I have been paying just over 6p per unit, they have sent me an offer of a new fixed price deal but it is over 9p per unit! They tell me this is 6% higher than their current standard charge but I would be protected from any further price rises for 2 years. I am shocked at the big jump, is there anything I can do?