Not my story, but several years ago my older brother was fighting for custody of his son with his ex-wife.
As the first custody hearing date approached, they were exchanging [un]pleasantries over text and my brother ended up saying something along the lines of, "I'm not continuing this conversation. I will see you on the 15th."
The ex-wife told him, "The hearing is on the 25th dumb*ss."
So of course instead of correcting her, my brother just allowed her to keep thinking it was the wrong date, and she missed the first hearing entirely.
It became the first of many mistakes she made in the court system that eventually led to my brother and the woman who is now his second wife winning full custody of his son.