The callsign for Easyjet is EASY. It is not in the default atc voicepack so atc will not recognize and speak it.
You need to install EditVoicePack X 4.0. EditVoicePack X will add hundreds of new items to the voicepack including Airline and Military callsigns, aircraft manufacturers and models, airports, and allow you to choose FAA or ICAO phraseology. You can also speed up atc communication. The EASY callsign is included.
This wiki includes the download link, a brief user guide and links to support.
http://www.fsonline.dk/en/index.php?title=EditVoicepackDave
At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation.