Fill out a FCC Form 1088 (online) every time you get one of these calls.  it only takes a couple of minutes and report the dead air as abandoned calls and of course report and rude and foul language.

Just received an abandoned call from this number but they do call from many different phone numbers, fill out a Form 1088 each time.  I think if enough people do this the FCC will take some action.

I have had several calls from this number.  I usually ignore and they never leave a message.  I called back and got a message indicated that I had reached Spark Marketing and they are sorry but I can not leave a message.  Further it said that they are a telemarketing company thats conducts telephone interviews to see if you qualify for a free industry7 specific trade magazine.

Yesterday I decided to answer the call since they had called so many times before.  After a long delay of silence the operator came on and gave me his name, asked if I was Mark ??.  I then asked if he could get to the pint since he had called so many times before, he then asked how may day was, I again asked if he would get to the point of the call, to which he HUNG UP on me.  Who would do business with a company that represents them in this way?

I just got a call from this number. The person on the other end asked for someone in our office. I didn't give two thoughts about it since the guy he was asking for gets calls from all over the US everyday. The guy on the other end sounded very flamboyant, San Francisco-ish if you know what I mean.

What a great idea to label it as telemarketer!  It is now in my phone as such.

Calls office numerous times a day.  Usually right in the middle of something.