Caller had Indian accent and said he was from the "CD Library", I asked him to take me off his call list (as if that will help) and I hung up. CID: Belvedere Ti CA (415) 691-6526 BELVEDERE, CA.
After Googling for "Belvedere Ti CA", I found they also used 415-366-5784 and 415-366-0260.
Repeated calls from this number. I called back today and got a message: "Due to the current high call volume, there are no operators currently available." I did not wait on hold to learn more.
I also got this same call . . . asking for my boss, but not willing to leave a message. Also tried recalling the number but only put on hold (no identification of company.)