Who called from 2317322764

Call received at 12:10pm EDT 8/11/2008.
I answered on the 4th ring and the caller (probably automated) hung up without hearing my answer.

Phone rang 3 times I answered and there was no reply

I did not pick up. Caller left no message

Phone rang three times then stopped.  Caller ID was Hills S.  Upper Michigan.  213 is breakout from 616

I received this call from 231-732-2764 @ 546PM. It is the "we have repeatedly notified you about your vehicle warranty... On a hunch based on having a conversation with exact same scripting I called back the # 800-914-9619 which is advertised on the Michael Savage program on the radio and ascertained that both people that I had spoken with were at that number.