Eric Trump reportedly called up The Washington Post on Wednesday to profanely rant at the reporter spearheading coverage of the charitable contributions made (or not made) by his father, Donald Trump.

But the younger Trump didn’t offer any evidence of those donations.

“I’m just saying, Jesus Christ, why is this guy trying to f—ing kill us?” Trump allegedly told the Post’s David A. Fahrenthold.

Fahrenthold had meticulously tried to find corroboration for Donald Trump’s claims of generous charitable giving, contacting 200 charities associated with the businessman. The reporter found only one charity that received a donation, in the amount of less than $10,000.

Fahrenthold also went to lengths to reach Trump Jr., reportedly attempting to contact him over email, through his foundation, and on Twitter.

Trump took issue with direct messages the reporter left him on Twitter and for a blog post Fahrenthold wrote raising unanswered questions he had about his father’s donations.

“It’s disgusting. It is so disgusting what’s happening,” Eric Trump reportedly told the journalist. “I’m saving dying children. We do tremendous good for people. And you’re sitting there tearing us apart.”

Trump alleged that his father had given his own foundation hundreds of thousands of dollars over the years in addition to the donations he had made directly to charities.

“My father has given me and my foundation hundreds of thousands of dollars. And he’s given other charities millions and millions and millions of dollars,” Eric Trump said.

When Fahrenthold asked for proof of the gifts, Trump told him that he could “ask the guys upstairs.”