ID = "Customer Service"

"Customer Service" shows up on caller ID
No message left

This must be the a$$hole low life worthless piece of [***] ba$tards with the change your energy provider scam offer so they can steal your identity.  They keep changing the number on Caller ID but since they are the only ones calling six times a day it has to be them.  Keep calling I'll keep blocking your number.  Waste your time you will never get through to me.

Keeps calling

called but left no message.  Phone number showed in caller ID.  I never answer unless I know who is calling.