At least they responded

And they actually did something. "They" is JPMorgan Chase.  Back in May I recounted my experience trying to get Chase to forget about a one penny error I made in paying my monthly bill. Well, my first attempt at solving the problem did not work. Last week I got a notice saying that I still owed them a penny. When I called and asked them for the name of the person running this division, I could not get an answer. So, I wrote a letter to the division, with a copy to Jamie Dimon. They did respond twice - once for the division and once for Dimon. Supposedly, I now owe them nothing.