I just received the same call when I ask to be taken off the list he said he would call me back. I called him back and told them again to remove my number from their list and they hung up on me again.
This person called both mine and my husband's cell phones at 9:00 at night. We turn our ringers off but I heard the buzzing on the second call. Both phones charge on my side of the bed so I looked at both to see which one had been ringing. The number showed up on both so I called it back thinking it had to be someone who knew us and needed us. He answered as World Promotions. It is very strange that he had both of our numbers. Very few places have both of our numbers besides doctors offices. I would love to know where he gets his calling list! We are on the do not call list.
I just received the same call when I ask to be taken off the list he said he would call me back. I called him back and told them again to remove my number from their list and they hung up on me again.
Don't request that to them, it virtually does no good and is asking for a wise remark in return. Although they can get in trouble for not honoring your wish, they often tell you they'll continue calling to anger you. Certainly do not return their calls. It is frustrating, but it angers them more if they have one less person answering their calls. Don't answer unknown numbers in any way to ensure less calls.