Who called from 2136404421

Called two days in a row, one before 8am. No messages left.

Calls number with legal action

Keeps calling for someone who ni have no idea who it i..then decided to call back and harass me.

I have received multiple calls from this number.  When I answer it just hangs up and when I call back, it does the same thing.  Who is this?

It is from American mediation Services. They left a message on my WORK phone. The number comes up as coming from a 213 area code, yet they said to call during Eastern Standard time. I will call back AFTER their hours and leave a message never to contact me at work and to notify me in writing if this is regarding a debt... You have to know your rights.