Why are you unable to block it? If the number is displayed, you should be able to block it. If it only displays SSI, how did you know this was the number calling?
they try to play the game like they are a survey company, in reality they want data to see if your home, have a real number, vm or other... Never answer this call if you have an answering machine...
Why are you unable to block it? If the number is displayed, you should be able to block it. If it only displays SSI, how did you know this was the number calling?