You, sir, are acting as big a jerk as the spammer.  Rosemarie Collections are obviously at wits' end over this spoofing.  In other words - another casualty of it.  And what are you doing but piling on?  Way to blame the victim.

*60 and you should be able to block the number. I have quite the list going currently.

Keep getting call from this number : 6147467495, no one responds. I just hang up

I answered call and there was a hesitation, like a robo dialed call. Heavy accented person wanted to upgrade my security system I had with them. I couldn't tell if he said ADT or AT&T, but whichever I told him I had a different company for my home security. I told him that he had some bad information. He apologized and said he would remove me from their list. We'll see. If they call again, I won't be pleasant at all.

Said they were from ADT.  Kept tripping over the words, I figured even if he was from ADT, had no desire to hear from him, hung up.  Now looks like it was actually a scam.