I have actually received replies back each time I've sent an email to them. I was polite with my inquiries both times so if you haven't been maybe change your opening line?
Robert's phone number is 415-383-5280 if you can't get through with the email & you have some questions you need answered outside of "When the is the PPS going to double so I can get out". I'd bet if a shareholder comes out attacking right off there would be no reply. Of course, please try to find the OS/Float levels for me if you do call/email as each time I've gotten a reply this issue has been skipped in the replies :)
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