I knew that one day my vigilant tracking of charged expenses would be worthwhile. That day has arrived.

Over the weekend, I went with several friends to Gordon Biersch, a sports bar and restaurant in downtown D.C. It was my first time there, and the establishment honestly didn't leave much of an impression on me. The food was fine, the atmosphere palatable, and the service lackluster.
The cost for my hamburger and Annie's house salad came to $16.39. I paid with a credit card, included what I felt was a fair tip, all things considered, and wrote $20.00 as the total. And that was that.
Until yesterday.
I checked my bank account to see if the charge had cleared. It had, but the tab had somehow grown another $5.39. Thinking the waiter had simply mixed receipts among the many party members, I called Gordon Biersch to speak with a manager and resolve the situation. I also wrote an e-mail to my friends, alerting them of the situation and encouraging them to review their charges.
The manager I spoke with noted early in the conversation that he was on my side, but also inferred that I might have consumed one drink too many and I might not be recalling the final tab correctly. I replied that was unlikely since there was no alcohol on my tab. He also noted any attempt to swindle me would be "not like" the waiter in question, who had been with Gordon Biersch "for a while."
Despite these misgivings, the manager pulled the receipt and reviewed it with me by phone. He told me that it appeared the receipt might have been modified and asked me to come down and review it, which I agreed to do.
In preparing to leave, I checked my e-mail and found I had received two replies from friends. Both said they also had been overcharged. One was hit for an additional $8, while another inexplicably got hit for $10 extra.
I traveled to Gordon Biersch and spoke again with the manager. He showed me the receipt, and I was immediately able to verify for him that it had been altered. The ink used to write a $9.00 tip and revised $25.39 total was different than the ink I used to sign the receipt. Also, the writing did not match my own.
Understandably, this befuddled and frustrated the manager, who was now in a position of having to issue multiple refunds and reprimand, if not fire, an employee. He apologized repeatedly and refunded the $5.39 overcharge to my credit card. I did not seek and he did not offer any additional refund or compensation.
In reviewing the bill, we jointly decided it had been unwise of me to leave the tip line blank and instead only write a total. I chalked that up to him as "a learning experience," and he asked that I share that lesson with my friends who had done the same. He also said that since I had verified for him in person that my tab was altered, he felt safe going ahead and issuing refunds to anyone else who was affected and called him.
Upon returning home, I sent out another e-mail, telling my friends what they needed to do and who they needed to speak with to resolve any discrepancies. As requested, I also encouraged people to never leave the tip line blank.
Which brings us to an interesting postscript. This morning I heard from yet another friend who was affected. But unlike the many of us who left the tip line blank and automatically incorporated the tip into the total, he drew a line across the tip section. Nonetheless, he was overcharged $10.00.
All this has caused me to wonder what was omitted from the Gordon Biersch slogan, "Every Guest, Every Time." After this experience, I think it's obvious.