Amazon seems to be the company calling. I placed an order and wanted to speak with the sales departments, so I entered my number. However, when they called I did not pick up as the caller ID said ESTARA INC.

Yes, this is the system used by Amazon (& others like Geek Squad) for their web-initiated callback system.  Pretty cool.  When I used it to contact Amazon for the first time, I entered my number, my phone rang immediately & I was connected to a real, live person right away.  No waiting on hold, no endless phone menus.

long dead air on my voice mail...don't know if they're calling directkly to my cell or if it's rolling over from the home phone, as i have automatic call forwarding...

Within the last 5 minutes, I have recieved 6 calls.....make that 7 now...oops, now 8! I answered on the 7th call, got put thru to an Amazon representative who asked for my order number. I told him I have no order number, and in his really thick Indian accent asked why I called, and I said, well, uh, you called me, and have called me in quick succession in the last 5 minutes, letting it ring 3 times then hanging up, then calling back, hanging up and calling back. He said someone must have made a mistake somewhere and to put down the phone now please. So I did, and no sooner did I hang it up it called right back, and this time the automated system informed me that if I was recieving this call in error, to push the star key twice, which I did, and so far nothing more. Niether me or my husband have filled anything out at all with our phone number for a callback. That means that someone out there is entering our phone number for an Amazon order. Punks.

Received phone call from 703-880-6100 Automated Voice said your call be be completed momentarily.
I hung up.