I have a gf in colombia and i need help with a situation Plz help?

ok well first i live in ny and she lives in colombia we know each other for 2 years and I come to visit her like every 6 months( seen her like 3 times with a month of time spent there each time). ok well lately we been having problems because shes not showing me like she cares about me like i do. so here's the situation, yesterday we were talking and i ask her what are you doing she answers by saying that she talking with her cousin so to make convo i ask her what they were talking about and she says stuff, so am like you could never like tell me what u guy Talk about like its all secreats shes like well it is, and i am like come on its not like everything u talk about is a secreat , so she gets pissed off ,and because she thinks am yelling at her she hangs up.( shes done that twice before and shes 24 years old) so then after she does that i call her and her cousin answers and says that my gf is cooking, i tell her cant she atleast have the respect to call me back or get on the phone for 2 secs and say hey am buzy( since she says she loves me") then after that i over hear my gf telling her cousin to hang up and the cousin hangs up.then me like a idiot calls again, and my gf picks up and i tell her " why did u tell your cousin to hang up and she says that she didnt ( what are the chances of me hearing that and then her cousin hanging up hmm). ok so then when she denies that she tell me look everytime u raise your vocie am just going to hang up on you, am like so thats how your going to solve the problems, so then she tell me look your acting differnt( even thou i havent done anything bad, is there something wrong about tell people how u feel am not yelling) so then i tell her thats you whos acting differnt, so then she says look i got to cook call me later and doesnt even say bye. what do you think I should do now Plz help?I will really appricate it