I got this call on my cell today.

I go 2 calls from them on 07/29/2011, asking for someone who wasn't me. I called them back and demanded to know how they got my #. Didn't get a good answer, but told them i was on a no call list, and they said thw=ey would not call back. So fa, so good.

The company is called NCO, although the phone display sometimes shows "Zenta".  They are a debt-collection agency based out of SE Pennsylvania.

Shows ZENTA on the callerID.  Won't leave a message.  Is calling my business.

NCO