Prince Harry allegedly 'swore' at his King Charles during an explosive row over money, a new book claims.
Having lost his temper when his repeated demands for funds were not met, it's claimed foul-mouthed Harry vented his frustrations at his father in a heated telephone conversation.
The shocking revelation comes in Robert Jobson's new book, 'Our King', with the royal correspondent revealing behind-the-scenes details about The Firm.
The breakdown of Harry's relationship with his family has been well-documented in autobiography Spare and his Netflix series, but now a very defining moment with Charles has been pinpointed.
Harry, who is still yet to decide whether he will be attending the Coronation of his father, allegedly burnt his bridges with Charles after the fiery argument.
The Duke of Sussex had been contacting the late Queen to discuss financial matters, but she reportedly grew 'weary and tired' of her grandson.
Jobson writes that Harry regularly phoned his grandmother after moving to California, but she felt 'troubled' when he asked her to voice his grievances.
"Her Majesty found Prince Harry's calls quite difficult and wearisome. She didn't want to interfere in the father/son relationship and would urge him to speak to his father," a source told Jobson.
The late Queen told Harry to go directly to his father instead, but it all ended in disaster when tempers flared during a phone call due to disagreements over money.
"Prince Charles simply stopped taking Harry's calls after his son swore at him and repeatedly asked for funds," according to Jobson.
"When the Queen asked Charles why he hadn't given in, he told her that he wasn't a bank."
In another book extract, which is being serialised by the Daily Mail before its release on April 13, it's claimed the late Queen got annoyed by Harry and wife Meghan Markle.
Volatile exchanges between Harry and his brother Prince William had puzzled the Queen, and it's suggested the late-monarch thinking he and Meghan were "quite mad".
Despite always having "great affection" for her grandson, Jobson writes about how the head of the royal family became "tired" listening to the couple's criticisms of the institution.
Queen Elizabeth also thought Harry was "so consumed" by his love for Meghan that it was "clouding his judgment", the royal correspondent added in his book.
Elsewhere, it's claimed the Windsor walkabout before the Queen's funeral, which saw William, Kate, Harry and Meghan come together after her death, was just " an illusion ".
The former Fab Four got out of the same car and paid tribute to well-wishers who had lined the streets - with Meghan famously getting a hug from one woman.
A royal source claimed William decided to put months of tension and upset with his brother Harry aside by offering an olive branch to show "unity".
Jobson revealed in his book that Kate considered the walkabout "one of the hardest things she's ever had to do".
It comes after plans for Charles' Coronation were revealed - but we still don't know if Harry and Meghan will attend.
The Sussexes are supposedly 'on the brink' of making a decision, so could be part of the large congregation inside Westminster Abbey on May 6.
Awkwardly, the date falls on Prince Archie's fourth birthday and there have been claims that Harry and Meghan want this to be acknowledged on the day.
A select group of just 15 will appear with Charles on the Buckingham Palace balcony to greet crowds at the roaring finale to his historic day next month.
This is only working royals, so Harry and Meghan have not made the cut.
A source with knowledge of the plans said: "The King has been very clear who he wants to represent the monarchy.
"There is little room for sentiment, this is a State occasion, not a family occasion and it is right that only the working members of the family are there at the big public moment."
