I just received this phone call also... I called back - they didn't identify themselves - she said it's "sara"... i just hung up - i don't even live in wyoming.
I got a call from this number today but was not home & there was no message. I just called it back and when the lady answered she said "customer service". I explained I'd missed the call earlier and she asked if I was calling from the same # they called, I said yes and she then asked for a different name to mine. I explained that she had the wrong # and she said she would remove my #. She was very polite and it was no big deal. Still really have no idea what it was in reference to but I'm willing to bet collections of some sort?