Deadlines
 

Many negotiating skills courses advise that deadlines are best ignored. To acknowledge them is to give your opponent a potential lever. Why would we want to do that? So stop worrying about 31st May. Instead, how about imposing one of our own for them to try to ignore? Pick something from our must-have list that is simple to implement (say by just spending some money) and set our own deadline. Present it as a token of goodwill that they truly are negotiating in good faith (pause for laughter). But when? How about 9th July - the fifteenth anniversary of a day that will live in infamy in the history of our airline. If they do ignore it, then that will confirm for certain what we probably all already believe in our hearts. The leopard has not changed its spots; not even by the slightest fleck.

How about something simple like 25yr housing? The fact it's not written down makes me think they are cheating lying scum.

The only weapon they have is a hammer so every problem looks like a nail.
I realised long ago that the best way to deal with bullies and their threats is to ignore them. Since I went into my own quiet CC many years ago, not once have I been personally threatened by the company for doing my job to the letter of the contract and no more.
My humble advice to you all is to do the same. Get a life outside of the job and it all falls into perspective. You can only negotiate with people who have integrity and something to give.