DEAR MISS MANNERS: I receive a lot of unwanted telephone calls from telemarketers and real estate buyers who are seeking to buy my house. Many of these callers start out by asking for me by name and then inquiring how I am doing. Every once in a while, one of these callers turns out to be a recruiter instead of a telemarketer, so I wish to remain polite in spite of the annoyance of being called repeatedly by the same companies I’ve asked to stop calling. Even knowing that most people who ask how I am doing aren’t actually seeking a truthful or complete answer, I still feel uncomfortable respon…