Who called from 3123866410

Received phone call from 312-386-6410.  Hung up when I answered.

Got a call from this phone number asking if we accepted credit cards for our services. When asked what services the caller was referring to, they hung up.

These could be skip tracers finding out if you are who you are. They work for collection agencies. Report them, DONOTCALL.GOV

Did the exact same thing to me.  It was a low voice, and had begun speaking just as I answer the call.

Called. I didn't answer because I didn't recognize the #. They didn't leave a message