NY Post reported that actor Robert De Niro & Jay Z got into an argument at Leonardo DiCaprio’s birthday bash. Beyonce tried to calm it down but it didn’t work:

A spy then overheard De Niro complaining to the rapper, a fellow TriBeCa resident, about a song Jay-Z agreed to record for the Tribeca Film Festival. De Niro had reached out to discuss further details, but Jay never returned his calls.

“Bob wasn’t in any mood to make polite conversation,” the spy says. “He told Jay that if somebody calls you six times, you call them back. It doesn’t matter who you are, that is just rude.”

When Jay-Z tried to make a joke of it, saying he is terrible on the phone, a source says, “De Niro kept telling him that he thinks he’s the man, but that he was disrespectful.’ ”

However, another source, close to De Niro, says it wasn’t as heated as “other sources” are claiming.