ABC is asked to apologize to the Prez

So the prez tweeted "he never called President Donald J. Trump to apologize for the HORRIBLE statements made and said about me on ABC."

One of the problems here is that the prez did not specify the specific statements made by ABC for which an apology is needed. What exactly did ABC say that deserves an apology?

Update Feb 28, 2020: we still don't know.