"Bill" wants to leave lot, keep getting message, but he is not there

[apryljo]

Hello everyone.  I am having a problem with a message I get every minute or less.  The character Bill says that I invited him to stay and he didn't get any sleep and that he is leaving.  But he is not on the lot anywhere.  He has never been on the lot.  I get the message constantly and I don't want to move or lose my characters, but this is getting really annoying.  Can anyone help me?