Hi. Same as everyone else...they leave a message just saying "Call me back at 801.....". No reason given as to who they are and why you should call back. Just plain avoid doing anything with them.
"This is Sarah Walker from [indistinct] energy. Please call me at 801-441-2128." This seems to be a Utah-based ESCO scam. We have real ESCO's in New York that actually increase efficiency and save money.