The problem is not just the staff at China Eastern (although they relatively have the worst service). The main problem is the people of mainland China in general. There, I said it. I am glad I left, and although I'm still in Asia, I get to deal with polite, civilized people on a daily basis, and it's a breath of fresh air.
Leaving kunming, the floor staff at the airport for this airline were so very rude, it was hard to believe.. Don't they get any training for basics of customer service?