CNN's Brian Stelter told White House counselor Kellyanne Conway during a heated interview on Sunday that it is not the cable news network's job to do public relations for the White House.

“It’s not our job to do your PR, it’s your job and it seems the White House this week admitted that there has been a lot of failures because the press secretary all of the sudden resigned and left his job," Stelter told Conway on CNN's "Reliable Sources."

"That's Sean's decision, and Sean was up against incredible odds and as the president said in the tweet about Sean, he thanks him for his service and thinks he took a lot of unnecessary abuse," Conway responded during her first appearance on the show.

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Conway started the interview by ripping CNN.

"We’re very happy to take questions from an outlet that I think has been incredibly unfair and systematically against this president. I guess you made the business decision to do so," she said

"You said the company made a business decision to be unfair to the president, when in fact what we are trying to do is cover an unusual president and try to figure what the heck is going on in a White House that seems awfully dysfunctional," Stelter responded.

The contentious exchange came amid increased tensions between the White House and CNN.

Deputy assistant to the president Sebastian Gorka has also sparred with various CNN anchors over its coverage of the White House.

Trump himself has ratcheted up his rhetoric against CNN, frequently calling the network "fake news" and "fraud news."

He raised eyebrows earlier this month when he tweeted a video of him beating up a man with a CNN logo superimposed over his face.