Dynamic Garage Door from Anaheim, CA calls from this number.  Also known as (714) 900-DOOR.  They call because you have requested Garage Door Service or you're getting a new Garage Door Opener installed.  Their techs always call prior to arrival to make sure everything is on schedule.  If you have any questions regarding your garage door service just call them back at that number or shoot the an email to service@DynamicGarageDoor.com they will respond shortly.  Also if you need more information about the company, just visit their website at www.DynamicGarageDoor.com