This was a few years ago.
I was filling out my time sheet for the week and opted to use a copy option which applies the prior weeks time to the current week. I submitted my time sheet not realizing that I made a mistake. For the current week I forgot that I had missed a day. Once I realized it (about an hour after submission) I sent out an email to our payroll very clearly stating the current week was incorrect because I copied the previous week's time but simply needed to change the time to reflect that I had taken a day off during the current time frame. Seems simple enough? Well, not for the person in payroll. Somehow they came to the conclusion that both weeks were incorrect even though that was never stated. Rather than read the email again, they spent 2 days going back and forth with my recruiter who finally chained me in to get clarification. I'll also note that the original email from me was displayed the whole time in the chain.
Yes, had payroll just read the email again they could've saved themselves a 2 day headache.