Ryanair - beware purchase card fees are being inaccurately shown

I purchased return flights today London<>Dinard online, payment page popup (where you see how much each card type costs) advised the fee for debit card was £1.20/sector (2 passengers=>total £4.80).

However, confirmation email showed I was charged £16 debit card fee (£4/sector). Rang Ryanair & they said fees had increased to £4/sector, when I mentioned that the payment page still says £1.20/sector the adviser dropped the phone. I rang back, another adviser (Amanda) repeated the story of new fees, and tried to make the situation by saying that debit card is still cheaper than credit card (£4 vs £5/sector), however what she failed to recognise was that the purchase page shows false fees also for credit cards! To this she added that the website payment page would probably be updated with the new non-false fee structure "in a few days" - so obviously more people are going to have excess fees stolen from them in the meantime. When I told her this was not good enough & requested a refund of the falsely-charged fee overpayment, she then transferred me to her supervisor who dropped the phone once I started speaking.

They are essentially stealing these extra fees from customers, I have electronic screenprints of all of the pages in the purchase process as full proof. Although hidden in the T&C page of site is the list of new fee structure, for anyone who is on purchase page (i.e. everyone!) & checks the fees charged they will be told a false value by Ryanair. Ryanair are refusing to refund me the difference (£16-£4.80=£11.20) they falsely overcharged me. Imagine Tesco showing the price of a pizza as £4.80 & then taking £16 off your card without telling you they're charging the difference.

I'm going to take this to the airline regulator & BBC Watchdog etc. Feel free to let me know if you've experienced similar false overcharging by Ryanair.

P.S. I have all the screen prints of each page in the purchase process, showing clearly the false fee structure in the popup window on the purchase page.