Angry ex-boyfriend on line one!

On the next episode of Keeping Up with the Kardashians, Kim Kardashian (who turns 30 Thursday) fields a terse phone call from former beau Reggie Bush.

As siblings Khloe and Rob listen in, Kim grimaces as her livid ex rants about some surprising news that's hit the web.

"Literally, it's f***ing driving me crazy," Bush tells Kim.

Watch the tense telephone stand-off now.

Keeping Up With the Kardashians airs Sunday at 10 p.m. (EST) on E!