Guys,
I fully understand and sympathise with your frustrations. Jet2 have restructred most areas in-line with rapid growth, so much so, some departments are probably playing catch up. Not perfect, and not an excuse, but probably one of the reasons why a reply is taking so long - along with commercial requirements.....
Hopefully when the dust settles and requirements etc are set in stone you will be told either way. If it's any concilation a new Air Crew Manager has been appointed who I'm sure will be dealing with this type of thing. It took me over 6 Months from Interview to starting, and that was a few years ago. Be patient, we are a great company to work for (in my opinion), not perfect, but show me a company that is.
Good Luck