i've known a lot of people in my life who would always start off being angry at me, assuming i'm malicious, accusing me of being horrible and treating me like shit.
thing is, they get angrier when you "prove" to them that you're "not a good person" by not taking their shit and being angry at them right back. they instigated the anger, the distrust, "lack of respect", but they are of the opinion that they need to get it - and a lot of it - first, before reciprocating. if they even do.