I work with various teams in my organisation. Whilst some are lovely and friendly, some are just really cold and distant, even though I do work that helps benefits their role. While some will say thank you or be really friendly when I see them, others will ignore my emails, barely scrape a hello when I see them but are very friendly with their closer colleagues or with people higher than them. I find that they will choose to talk to me when they need something, and at that moment be nice but then I'll see them a few weeks later and it's like I don't exist. Not even 'hi how are you'. Even though they sometimes ignore my emails I find that when they email me I will reply straight away. I don't want to be petty but am starting to think maybe I should be the same with them? But that could affect my progress. Or should I just suck it up and just adapt to their moods? They are all in roles slightly above me so I am not someone they need to suck up to but I do alot to help them behind the scenes.