Who called from 4159415205

Greg Klein called from (415) 941-5205 requesting call back but did not leave message. Other posts show similar calls from Greg Klein as telemarketing to sell financial services.

Same as what Jason mentioned, got a message from 415-941-5205 and got a voice message from Greg Klein sternly requesting a call back, but with no information as to what it was in regards to. Glad I checked here first, thanks.

Also got a similarly cryptic voicemail on my office number (he had to go thru the operator). No details, just a request for a call back.

received several back to back calls from Greg Klein, phone number 415-941-5205, got very upset and rude when I asked what the call was regarding

Voicemail left on my office phone to call Greg Klein back at this number.  No other information.  However, Spokeo.com has this number registered to Carl Hagenmaier in Mountain View, CA.  Maybe when you return the call you can ask for Carl and see what happens.