Who called from 2016858600

When I asked who it was I got a hang up.  scammers

I called back from a phone other than my cell, it's a collections agency. Same place tried me from different numbers, they never leave messages.

No answer and immediate hang up ??

First time I got a call, my phone app tells me this is a collection agency, "SPAMMER".  Never answer the call.  Put on block lost.

Have been calling for a month. Finally answered.  They asked if I was me and they hung up right after