Thats freaking crazy....
I just experienced the same. If a phone number is out there on the Internet, maybe as Data wich is sold or in other situations - you cant barely get it off.
As Teenagers I just posted my friends Number in a Justin Biber Thread, he recieved like 20 calls each hour. At first we had a laugh at the weekend and I was playing the guitar at a campfire, pretending to be hem - the girls got crazy and must have told the thread, that its finally the right number :D
At some point he just rerouted them all to my phone and it was ringing like the next 2 weeks all the time :D