I received a phone call on my cell from this number (a recorded message).  I left a message telling them this number was on the "Do Not Call Registry" & not to ever call this number again.  A few minutes later I get a "text message" from this same number say "It David".  I called the number & left a message for "David" & told them not to "text" again.  I had to block "text message" from my husbands phone because he a gotten several text message from them.  Bad enough getting "spam" on the internet but sure don't need it on the cell phones.