Trisha LaForty found the letter after returning for a family day out at the beach with her 11-month-old son Will.
It read: “You may be able to ignore your baby crying but we are tired of listening to him crying non-stop all day.”
Trisha took to her Facebook page to vent about the passive aggressive message.
She wrote: “To whoever wrote this note: thanks. Like being a parent isn't tough enough... You didn't even have the guts to come knock on our door.
“FYI Our baby doesn't cry 'all day', he cries when he doesn't want do go to sleep, when he's getting his nappy changed and when I say 'no' because I refuse to let him be spoiled and run around like he owns the joint.”
She added: “If you'd like to chat more, feel free to pop in. You obviously know where we live.”
The 26-year-old decided to speak to her immediate neighbours after receiving the angry message.
She told local news: 'I wanted to clear the air, but also to find out if anyone had experienced any similar notes.
“I still have no idea who it is. I guess it could be someone who sits at home all day with nothing better to do."
“Maybe they could have offered a helping hand rather than writing than writing a silly letter?"
The young mum also thinks people should be more considerate to parents of very young infants.
Trisha said: “Every baby has good days and bad days. Parents should be able to have the support from their community.
“I think it's sad that there are still people out there who lack the true feel of what a community should be.”
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