In a phone interview with NBC News’s Kristen Welker, Mr. Trump said he had no plans to speak with Mr. Musk, calling the tech billionaire “disrespectful” to the office of the president. When asked whether he had any desire to repair his relationship with Mr. Musk, Mr. Trump said, “No.”

The pair has spent much of the week taking increasingly aggressive pot shots at each other in social media posts and press appearances. Musk on Wednesday posted that Senate Republicans should vote to “KILL the BILL,” which would add trillions to the deficit while cutting Medicaid and other programs benefitting the poor.