Ms Ivana however claims she doesn't use her "direct number" to the White House because " Melania is there".
Ivana was furious, but this tough lady, who was born and raised behind the Iron Curtain, kept her cool.
Ivana Trump has since been married and divorced twice, and now maintains a jet-setting, globetrotting lifestyle. "And if you want to get your words across rightly, without telling The New York Times, which is going to twist every single word of yours, this is how you get your message out, '" Trump said she told her ex-husband. "I can only shake my head at how insane it was", Ivana writes.
Ivanka Trump could run for president in the next 15 years, according to her mother Ivana.
In the book, Ivana writes glowingly about her marriage to Trump and her prominent role at the Trump Organization.
The President of the United States of America's ex-wife has written a book on their failed marriage. She said she doesn't call into the White House switchboard, however, because First Lady Melania Trump "is there".More news: Las Vegas shooter reportedly researched Boston concerts
Ivana Trump, President Donald Trump's ex-wife, says she was offered the chance to become USA ambassador to the Czech Republic but turned it down in order to protect her globetrotting "perfect life". Her children have all contributed passages to the book.
Despite their bitter divorce, she is back on good terms with the President, speaking to him once a week and regularly offering him advice.
She writes, "This young blonde woman approached me out of the blue and said 'I'm Marla and I love your husband".
Speaking to CBS ahead of the book launch, the former model from what's now the Czech Republic was still unable to refer to Maples, Donald's second ex-wife, by name.
'It's a new way, a new technology.
However, she also chronicles the pain she felt during the divorce and also reveals how her children Donald Jr, Ivanka and Eric didn't speak to their father for a year after the split.
Ivana Trump's new book, "Raising Trump", is scheduled to be released next week.
"I was just offered to be the American ambassador to Czech Republic - and Donald told me, he said, 'Ivana, if you want it, I give it to you, '" the 68-year-old said in the interview.