This company or whatever has called my cell phone probably a dozen times. I never answer it waiting for them to leave a voice message, they never do. Return call says this number cannot be called in to but respond to the 800 number they give.
Vanguard Group is an investment management company that manages approximately $1 trillion in assets and has 12,000+ employees.
They are a very successful and reliable company.
If you prefer, call 1-800-345-1344 or go to http://www.vanguard.com/