Sorry, but what did you expect for 1p + tax? Like all tings in life, you get what you pay for and you paid virtually nothing.
The 'customer service' or Ryanair is well known - none. You've lived in the UK now for a number of years so you should be used to these sort of things - every other Daily Mail has a story like yours.
My advice - claim the Easyjet flight off your travel insurance, learn from the (hard found) lesson and don't fly with the budget guys if you need to be somewhere important. Oh, and tell all your friends to avoid them as well.
Sorry for the lack of sympathy, but you were taking your son to his wedding and you went on a budget airline who have a reputation for poor service ??