Who called from 3237900345

I keep getting calls from this number.  Everytime I try to call them back it's either busy or it rings three times and it's sounds to me like somebody picks up the call and remains mum.  I just let it ring, and per usual they never leave a message.

A guy called me, and was rude. He asked for the owner and when I said who was this..he said he'll call back later and immediately shut the phone. He was very rude!

SOMEONE KEEPS CALLING ME AND HANG UP RIGHT AFTER I SAY HELLO. I CALL BACK AND THEY PICK UP BUT NO ANSWER. ANOYED!!!!!!

Got a call from this phone number, very suspicious.

I just received a call from this #. It was listed as unavailable. When I answered they hung up.