<p>Slightly different situation, but I work at a university. Sometimes students seem surprised they owe money for classes they claim they dropped. Or tried to drop but had an issue. If the students contest the charges, I am frequently asked to look into the matter. I search the helpdesk logs to see if we have any record of the student contacting us having a problem. We can also check logs to see if the student even logged in to our system during the time they claimed to.</p>