I always apologize and say I have the wrong number. I know I get annoyed when people just hang up, so I figure I owe it to the person who I mistakenly disturbed to at least give them an apology for bugging them. I guess I'm just over polite.
This is off topic, but I have a funny hangup story. A while back, I was getting a call from a telemarketing company every week or so. It was the one where they tell you they would be sending you about eight magazines for free, but they just ask that you pay x number of dollars for shipping each week (which ends up being more than the cost of the magazines subscription rates). I must have got this call a dozen times, and I was really annoyed by it.
So, one night, I get this call for what seemed like the millionth time, and I start jotting down the costs that are involved in getting all of these "free" magazines. So, I sit there patiently waiting while the guy goes on his 10 minute spiel about the great deal I am getting to get all of these magazines free.
When he finishes, I say, "I just want to make sure I got this right. For $5.40 a week, about $60 a month, $720 a year, I can get all of these magazines for free." I just kept on rambling on and on about the "deal" for several minutes until he finally hung up on me. I never got that call again.
Karen