This is BY FAR the worst spam caller I get. I blocked the number very early so I have no idea who it is. I have seen them use a 1 prefix before the number, etc. In the last 2 days, they have tried to call me 6 times. Fortunately, the call blocker catches it and it only rings a short ring. I believe overall, they have literally called me 100 times in the last couple of months.