Cast them out of your life, they're clearly one of those people that ask how you are out of a general it's what people do to be polite way, and they don't really care. Like the person at work who asks how your weekend was, but doesn't actually want to hear anything other than "great thanks, you?"
My Dad was like that, he'd be all sincere and act like he cared, until he heard something he didn't want to. I vividly remember going to a GP once, I'd had this stomach ache for ages, not painful as such but a nagging dull feeling, and this quack told me I either had an ulcer, or cancer - this was without any tests or examinations I might add, clearly got his doctorate from a cornflake packet, and my wonderful Fathers response to hearing this was to start an argument with me and demand I moved out.
I didn't have cancer or an ulcer, it was stress I think, it went away once I got away from him.
Don't waste time on people that pretend to care when it suits them, it's not worth the effort. A proper friend will listen and try to support you, not get angry and say they don't want to hear it when it's then that's explicitly asked you how you are. The old ask me no questions and I'll tell you no lies idiom.