Who called from 5139827020

First, 513-725-0855 called here about 10:00 am. Caller ID says, "Cincinnati, OH."  Didn't recognize number, so didn't answer. Then, at about 10:30, received a second call from this number, caller ID said. "Seven Mile, OH."  Similarly, that one also was not answered.  I'm noticing more and more instances of SPAM calls (not from the same number) coming in twos or threes -- could these two be related?

I got the same phone calls as well.  I didn't answer either.

I tried to answer it and no one said anything

Its a company from Duke Energy trying to sell you a Supplier Rate for your electric