called several times but never left any messages, anyone know who is this?

Same here. They've called repeatedly but never leave a message.

Today they called my celphone, asking for my mother who's been dead since June.  My celphone has been on the Texas and National Do Not Call lists since their inception in the 1990s.  The caller identified as being with the Heyl Group, an Austin TX realty firm affiliated with Keller Williams.

So apparently, Heyl is now using a SPAMhaus call center in San Antonio to do cold calls on dead people, working the obits and county probate records.  That's pretty darn sick, if you ask me.  More surprising -- Heyl Group and its founder, Tim Heyl, apparently have high ratings in the local real estate community.  Wait until my online reports hit the web ... and my certified mail cease-and-desist letter lands on Tim's desk.

That is really interesting, this number has called my cell every day, I have never answered the phone and they have never left a message.  But the thing that is interesting is my wife passed away about 14.5 years ago at the age of 37...If that is indeed what he is doing, he is very sick and disturbed....
Thank you for your research and post.

Got a call today from an Andrew at this number said he was with Keller Williams.   He said he was calling to see if I was interested in selling and was calling because many homes were sold in this area last year.  I don't think it is as sinister as you feel and just a coincidence.    Sorry about your loss though.  I just checked the number to verify he was who he said he was, it seems so or at least they are keeping the story strait.  He asked me if I were moving in the next year and if he could call back next year to check.  Called on my cell which is odd. I have no idea how they got my number which had me suspicious.