I thought I was paying 13p per unit, I was wondering how it was costing so much, I checked the meter 17.6p typical UK greedy bastards, no wonder people by pass lol
Same happened to me, gave me a good deal then refused to honour it due to last owner of the house previously been one of their customers.
Tried to tell me I wasn't a new customer, I argued and got a reasonable deal and then they whacked it up after 12 month and refused to do me a better deal. Stuck it out for a while due to my own laziness. Switched recently.
Nothing good comes of been a loyal customer these days, piss taking twats.
That should be changing pretty soon as they've done it with insurance, no longer allowed to only offer the new customers the best deal while ass fingering the loyal customer.