called me 4 times on my cell within 4 hours on a Sunday. called number back. said "if you received a call from this number, it was regarding an upcoming appointment or you received a message." Looked up area code...Michigan. Not from, nor do I know, anyone in Michigan.

this number  231 732 2207  called me three times :two missed calls and a day after a third call ,i answered but he didn't say any word.this happened on 2nd and 3rd august 2010.
Anybody have information about this kind of phone numbers,please let others know.