White, no one reading this page is in a position to prevent anything happening in your life, including nuisance calls. The way to use a site like this is how you see most other people use it. You share details like names, things you were told by the caller, Caller ID tags, anything which might help unmask the mystery caller. From there one can often do something constructive to end the calls at their source with the help of various laws controlling different call categories.
Resident47 Jul 01st, 2012