If you can't read, and persist in calling me when I am otherwise engaged, please do not hang up without leaving a message. I do not turn on my psychic powers without good reason.
If I'm good enough to call back the number on my caller ID, please do not then bitch me out because I don't know why you called me. See that? It's all right there. You called me. I called you *back* because hangups leave me wondering the rest of the day unless I find out what you wanted.
I still don't know, because none of you people can tell me. I shall be billing you for that seven-minute mobile call in the middle of the day, four and a half of which were me being on hold, and the remainder of which was you assuring me that you don't know why I'm calling and what did the message on my answering machine say? It didn't say anything. There wasn't one. Twice.
If this happens again I shall take great pleasure in transferring my business to the other crap bank.