Once I got my Medic Alert info to double check for validity, and another woman's too. I was livid about the lack of confidentiality.

They apologized all over the place, and I guess basically "they are the only game in town" so I stayed with them... sheesh!

On a lessor annoyance scale, I once got my season tickets for the ballet, and those of the people next after me alphabetically. They lived near me, so I dropped them off.

Funnier? I once sent a friend (who lived 80 miles away) an invitation for a 4th of July party. She got it on Halloween!