"We need some help with the payroll sheet you designed. We would like to discuss this in person in order to show you what the problems are. Is there anyway next week we can get you on board to help us? Please let me know. Thank you and Happy Thanksgiving!"
Before r/antiwork, I probably would try to find a way to help. Now.. I see some issues with it. 1) I did design it, to make it easier for ME to run payroll. 2) It's been working for you just fine for more than a year and all of a sudden there's "problems?" Probably user error, if anything. 3) This company is 20 miles south of home and I currently work 20 miles north of home. Why would I burden myself, and my current employer, to try to help these people with something that, I know, I will not be compensated for?
I'm debating on whether or not to even respond to this. Happy Thanksgiving, indeed.