This is sort of about health.
Last week I got a $28 check from the Department of Veterans Affairs. The only explanation was "SC RETRO ELIGIBILTY CHANGE."
Curiosity led me to about ten phone calls, three unanswered voice mails, conversations with five or six mostly nice VA workers in four different states and being frequently told to hold.
A representative from the Benefits half of the department told me it must have come from the Health half. When I told her I hadn't had any contact with that half for over ten years, she told me to hold.
Finally, a guy from the Billing Department told me it was a refund for an incorrect prescription co-payment.
In 2004.