The reason that their meters are 
generally more accurate that yours is that they have a meter lab that sends a standards type meter to a high precision laboratory for calibration on a periodic basis.  All of the trouble men's meters are calibrated against that standard.  When is the last time you had your Fluke calibrated?
Step 3 is yours to take, go to the public service commission if you can't get them to respond to you.  
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Charlie Eldridge, Indianapolis, 
Utility Power Guy