Passengers can always contact their credit or debit card companies and ask for a chargeback as the airline has failed to provide a service that has been paid for. The card company then just removes the money from EasyJet’s account whether they like it or not. Easyjet then has the right to appeal which I would doubt they would do as they have no grounds to hang onto the money.
It also covers transactions below £100 unlike Section 75 agreements.
https://www.which.co.uk/consumer-rig...use-chargeback