Called twice today. I was busy the first time and didn't answer and they left no message.  I answered the second time and no one was there.
Not sure who it is probably a telemarketer.

Have called multiple times asking to speak with "the person who handles the Consumers Energy bill". The first time I let them run their schpeal but then I said I didn't want to make any changes and they suddenly hung up. Then they called again today... I quickly told they I didn't want to participate and they acted confused. I told they I don't want anything to with people who call me marketing and then hang up on me. Better not get a call again!

spoofed number

I keep getting calls from this number.  I do not recognize it, so I don't answer it.  They leave no message - just keep calling!