Competence notwithstanding, this caller is "Direct Opinions", a customer satisfaction survey agent hired by legitimate businesses such as AmeriGas (who confirmed this).
For valid reasons, call centers typically do not store your number with your id in case you call back (there are simply too many of you). Therefore if you call back, it is like a cold call which (shoe on the other foot) you might not accept.
Call received on my cell phone. As soon as I answered, they hung up. I heard the sounds of people talking in the background; like a call center would sound.
1st time call from this # (313-327-3038). Caller ID displayed as "Cellular Caller". There was a dead air and then call disconnected. Have no idea what this call was about.