I would feel awful. I have been T shopping, and noticed that a lot of them say on their outgoing message when you can expect a call back. They usually say within 24 hours or by the end of the next business day. So if I didn't receive a call by the next day, I would call again in case the first message got lost somehow. I had this experience a few times with my xT -- that he didn't get the message. It was very, very frustrating, but he was very reliable about returning calls, so I learned when I needed to leave a 2nd message.

I hope you can work through this with T so this doesn't happen again.