For awhile my cell number was crossed with someone who recently moved from California and her children were calling many times a day and getting me. Explanations did no good. I felt bad for the kids but got so that I would not answer the phone and let it go to voice mail. The mom's new boyfriend was furious that i told the kids they had the wrong number and he left me threatening messages. He sounded like a real winner, but the calls eventually quit.
Then I get a new phone from work and the phone number apparently used to belong to a "lady of the evening" in Waikiki. I was getting lots of phone calls late at night from guys looking for some "companionship." I told them I was too tired.