Dodgy Airline designed to shaft the customer in every way

Booked to go from EDi to Faro on 3rd May, however my Dad got shot and we now have to either cancel or change date of the flight. Phoned them, to cancel we would lose the £545 it cost us, no refund, but hey theres an option to change the date...sound good right?! WRONG!! They say the prices advertised online is different to what they have on their system, which to me is false advertising! They want to charge us an additional £302 to change the date and charge £35 to make the change!! The online price to book a brand new flight is £421.60, so in theory I should be given a refund for the difference...WRONG! They don’t give refunds of the difference either!! This company practices false advertising and gives customers the false impression that they provide options, but in the end, they try and shaft the customer in every which way they can, even in emergency situations that is beyond our control. If you want good value and good service from an honest airline, go elsewhere!!!