I've had these calls and telling them I do not own a computer did not stop them. I have caller ID and when these strange numbers appear I answer with my best old lady impersonation -I ask them to describe this here com put er thing then ask if it runs on lectric then tell them we ain't got no lectric they hang up and after only a couple more calls they quit calling. This has also worked on those pesky car insurance people. Hey some times you just have to create your own giggle of the day.