WASHINGTON - The war of words is escalating between Donald Trump and a union official who suggested that Trump wasn't being truthful about the number of jobs being saved at an Indiana factory.

When Trump visited Carrier's factory last week, he suggested that more than 1,100 jobs could be saved in a deal to discourage the company from closing the factory.

A local steelworkers union president, Chuck Jones, then said "we could use a little more honesty" about whether more jobs would be lost.

Trump yesterday tweeted that Jones had "done a terrible job representing workers."

And now, Jones is challenging Trump to back up his claims about the number of jobs that will be saved. He told CNN today that Trump had "overreacted" -- and that he "should have come out and tried to justify his numbers."

Jones had said following Trump's announcement last week that the number of jobs saved is closer to 800. But he suggested that Trump wasn't being honest in saying that no more jobs would be leaving.

In his tweets responding to Jones last night, Trump said the union official should "spend more time working" and "less time talking" -- and that the union should "reduce dues."

About 30 minutes later, Jones tells MSNBC, he started getting harassing phone calls, including one that said, "We're coming for you."