I've made a few doozies myself, but the worst I've encountered was one that I was a victim of, which, but for my silver tongue, would have got me fired.

I worked in a call center that used an Aspect phone system. After working there for about 6 months, the Aspect programmer (who ran reports for management) and my manager approached me.

"Curtis, do you just never call any of your customers back?"

"Of course I do, what's this all about?"

After a little while of pleading my case, I got the programmer to run a custom report on all my call data without filtering anything, where my stats then looked the same as everyone else's.

As it turns out, our phone system let you omit the "1" on a long-distance call, which I figured out in my first week, so I was happily dialing one digit less on all my outbound calls. The programmer, who generated the reports on which some portion of an employee's job performance was determined, was grepping for phone calls in the database that matched a fixed length - 12 digits (9,1,then the 10 digit number).

That was quickly fixed, and it was determined that calls to local companies and international calls had never been considered in the past, either. However, I was the *only* employee to ever not dial a 1 for a long distance number. To help rectify that, I made sure to mention the shortcut dialing method to all of the new hires classes I trained.