Who called from 6267863701

Said we have an unpaid debt. When I started to press for more information they hung up. Said they were from ARS Collection Agency.

they called my house and I wasnt home.  they asked for me and was told I wasnt available and they hung up.  tried to call back and it said it was not a working number

Called me about 2 times today on my cell phone (10:37 & 16:44 EST).  I refuse to answer numbers I don't know.

Got a call 3:53 Mon Aug 6.  Had a few over the past year, never answer calls from #'s I don't know.  Now I'm a little worried.  Have no debt.  WTF?

rcvd cll didnt answer since i dont know #. no msg was left.