Who called from 2021010010

I have had this number call me 15 times in 2 days and most the time it's one after another if I answer they hang up if I don't answer it they call again and again until I do answer it.

Yes same thing to me, I got less than 10 times so I blocked that damn phone number!!!

I flipped on the guy and he started cursing and kept calling back private

I blocked it but still call. WTF???

try to block the area code or use a call block device or software if you got a cellphone