aren't friends meant to be talked with?

I don't know but whenever i try to call/text or connect with my college friends, believe me we were good friends during college days, they all make me feel as if "tu kitna khaali hai". they work as SDE in some random ass company in Mohali and act as if they are the most busiest persons in the world. but in reality i have got a better, more salaried and well reputed job than all of them. but i work outside chd and come here in weekends. none of my college friends are there in that city. so basically I'm alone in my professional world. I am also studying for some exam alongside my job, but even after that I don't know , is it only with me , that I always end up finding free time for reaching out to someone. but in the end , it ends up making me look desparate for their time. but what is wrong with that? aren't friends meant to be talked with? the thing is that , as per what life has offered me, they are my only friends: take it or leave it! i don't have any social life left outside them. and I don't think i would be reaching out for any of them again. i don't know what to do. i can write on and on.. but i think it's of no use.