EVERYONE could you please give me your opinion on this!!! thanks?

this guy i know kinda blows hot and cold with me..hes friendly, chatty,he teases me,he flirts with me, but its joky only flirting. hes asked me to help him out wit different things(to my advantage)hes an attention seeker.sometimes when im talkin i feel as if he doesnt listen to me, he does this to other ppl aswell.he rarely answers my calls or replies to my texts. i dont call or text him that often just once a week,when i have2. as i need something from him.(cant say what, coz its private business).i didnt ask for it, he asked me if i would like to do it so i agreed. the other day we had a cheeky text conversation where we sent like 10texts back and forth.i just want you to give your FULL opinion on it.why does he ignore my calls, and then text me like 10times back and over??why do i feel used when really im the one using him??what can i do to turn this situation around and show him that im not an easy push over, plz dont say ditch him! thank