Who called from 2544335123

Answered and no one there.

This is a scam:
https://www.washingtonpost.com/local/if-the-u ... m=.e432949f800f

Claimed to be from AT&T and they want to lower our bills.

Caller I'd said unassigned, and no one was there when answered

Caller I.D. reads Unassigned 254-433-5123.  I answered and a woman says they could lower my AT&T bill, but when I said it's already lower than $50.00, she admitted she could not help me.  Apparently, they can only lower your bill if it's already over $60.00 a month.  I then blocked this number.