Danielle Styles thought her kids were well-behaved until a woman left her a note.

How should kids behave when they’re taken out for lunch? Do they need to sit quietly at the table with their parents? Or is it okay if they run around and play in between the tables?

UK mum Danielle Styles didn’t think her sons were doing anything wrong at a recent meal at a restaurant. But a fellow diner clearly disagreed, leaving Styles a nasty note written on a serviette.

“CHILDREN SHOULD BE SEEN AND NOT HEARD,” the note read.

Styles was out to lunch with her one-year-old and her seven-month-old baby. Her sister Katie was there with her two-year-old son, as well as her friend Lea with her one-year-old daughter.

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She shot a video of the kids playing together at the restaurant, and it’s been posted online. It shows the kids spinning in circles in an open space between tables, and the mums encouraging them.

Styles says she noticed a woman at a nearby table looking over a few times. When the woman left the restaurant, Styles says she slammed the handwritten note to the window.

“It was shocking, to be honest,” she told The Mirror. “I still can’t believe it.

“I think it’s disgusting how someone can say that about four innocent babies. We were angry and upset that someone would write that about our kids.”

Styles says her oldest son was asleep in his pram at the start of lunch, then woke up crying.

“Every child cries,” she added. “But I think that’s what started the woman off. She was not happy.”

She says after the woman slammed the note to the window, she and the man she was with ran off to their car.

“My sister and I went out to see if we could talk to them, but they drove off laughing and waving.”

Styles says the kids are loving towards each other and were just playing.

“When they were running around there was no one sitting where we were,” she explains. "They didn't go anywhere near the woman so I don't understand what the issue was.

“It's the Easter holidays. What would you expect?”

Online, comments were divided, with some people supporting Styles.

“So you don’t like to hear children crying or shouting – so what?” wrote one. “I don’t like hearing people having loud conversations or guffawing like donkeys, and I can’t stand certain accents, but that doesn’t give me the right to complain or to be rude and leave passive aggressive notes for strangers and then run away like a big baby.”

However, there were a lot of people who took the opportunity to unload their frustrations about kids in restaurants.

“I go to a restaurant to dine and enjoy the food, not to hear or see noisy ill-behaved brats running amok!” one man posted. “They should indeed be controlled.”

“Her children are screaming, running around and annoying everyone else in the restaurant,” said another.

“It’s selfish people like her that just say ‘Kids will be kids’ that ruin the dining experience for everyone else. Here’s a suggestion: teach your kids manners and how to be behaved and you won’t get grief in the future!”