insurance problems with my personal life

Hi so i am a 19y f and i live in austin texas for preface. i am a full time college student and i am mostly but not fully financially responsible for myself, i still live with my mom so big bills are covered. here is my situation: my father has always been not a guy dad to me, the only thing he is contributing to my life is having me be on his health insurance (for dental, surgical, basicly anything health related) back in january he told me that he was taking me off BECAUSE his wife and kids (my step mom and half siblings) are in a diffrent country right now to get culturally inclined with their culture and learn the language and what not. my father told me he would put me back on in august (when they were supposed to come back, but now they are staying another year) the reason my dad took me off was bc he CLAIMS he would have to pay 5,000 for a family insurance plan which is why he wants to wait for his other kids and his wife to come back, pretty reasonable. BUT my mom brought up a great point, 5k to him is nothing, when he goes and visits our family in the other country he probally drops 20k just for the time that he is here (abt a month or 2) my father is not lacking in financials, matter of fact he is very wealthy, he is a computer engineer just stopped working for oracle and now works for the company that warren buffet owns, very smart computer guy, but has never rlly been there for me financially. i need advice i dont know what to do, i just kinda want my fathers words to match his actions, he tells me he loves me but he has stopped supporting me in any way, financially, emotionally, and physically. there’s ALOTTT of history between him and i that i wont go into but, advice would be nice :)