I've been looking for this song for a year Do you think you'd have any idea?

last summer when neighbors know my name, and daddy's home and nothing on you came out on 101.1 the beat jamz fm radio station, there was a song that i have been trying to find and remember since then. It starts out as a phone ringing they talk i only remember 1 part in the chorus, something bout why cant you call or cant wait for you to call but when he said call he dragged it while changing his tone up and down like cauauaull. If he don't say call it sounds just like that though. I heard it when my boyfriend was in jail and the song i took the chorus and made it as if i could take his meaning and mean it the way i want to. which was either hoping he would call or wished he would call or why wont you call. He's a R&B rapper with a kind of high pitch voice. Does any one recognize this song at all.