Who called from 2106290306

The caller began with Good Morning, Mrs..................., I'm with (I can't remember the name, but it was something like .....American something, it interrupted my nap and I angrily hung up).

Phone rang but there was nobody on the line when I picked it up.

Have been receiving calls for the past few days from this number.  I answered today. No one on the line.  Appears to be a rotary call from Americraft Windows and Siding, San Antonio, Texas.  Their main number is: 1-210-629-0300.

They call, leave no message, but fill up my answering machine with dead air anyway....thanks for the info.

Had my name and address, asked if I owned the house and started to make a pitch about upgrading my windows.