Potus never called Corsi.
"Even look at Roseanne, I called her yesterday. Look at her ratings! Look at her ratings! I got a call from Mark Burnett, he did The Apprentice. He's a great guy. He said, 'Donald, I called just to say hello and to tell you did you see Roseanne's ratings?'" Mr Trump said, referring to his reality show.
http://www.bbc.com/news/entertainment-arts-43583982