["I put in vacation request months ago and am now just being told they can't grant it.", 'Oh no!  Why did it take them so long to get back with you?', "I don't know really, but I think that's my last straw with them."]
That's horrible!  Did you already have plans made for the trip?  I hope you can work it out with them, but if not maybe finding another job that is a bit more accomodating would be beneficial.
I put in vacation request months ago and am now just being told they can't grant it.