Greenberg
(2010)

Roger Greenberg (Ben Stiller) comes to L.A to housesit for his brother Philliip (Chris Messina).

He reunites with an old bandmate Ivan (Rhys Ifans) and connects with Phillips assisant Florences (Greta Gergwig). Roger having alot of issues eventually explouds his anger on Ivan and Florence.

Finally realizing the ass that he is makes a phone call to Florence apologizing. They meet several days later when she listens to his phone call.   

Thanks Michael R!