Who called from 2103010307

I've gotten about 4 calls from this number in the last hour.  Whenever I say hello they either stay on the line and don't say anything or hang up. It's annoying.  I'm probably going to block it

same here- got a call from this number (201-301-0307) and when I answered they just hung up- called them back but it went busy after a few rings.

my ID said "Builders Square" too

Please do not call this number again or I will take legal action

Said they are "Credit Card Services". Hung up before I could talk. I have gotten calls from them before and they always hang up when I ask who they are. I reported the number to the FTC and my state Attorney General.