22 months ago, I signed up for a broadband deal that was £33/month for 18 months, and £65/month thereafter. When the 18 months was up (so, 4 months ago), I moved onto a new contract, under a differently-named deal, with a new contract start date, but the same terms i.e. £33/month for 18 months and £65/month thereafter.
But since then they've been billing me at £65/month.
I've emailed them to complain, and have sent them a copy of the contract documents they sent me, showing the new start date, but they just keep saying the new contract has a monthly service charge of £65, and ignoring where it clearly says £33/month for 18 months.
I can't get through to a human on the phone, and the emails just go round in circles with me saying "but it says £33/month" and them saying "but it says £65/month".
Where can I go from here? Is there some kind of ombudsman or some other body that regulates this sort of thing?