"I woke up to the "I forgot to tell you I moved a few weeks ago" email"

At least they told you.  I had a client that moved to Arizona two years ago.  Got the the return done a week or two ago and mailed it to them.  I'm looking at my tracking information for priority mail and see that the return is coming back to me because there is no such person at that address.  We call him up and ask what is going on ------------------- oh yeah he moved.  His son that still lives here was supposed to tell us that he had a new address ☹️