a half dozen phone calls later
A surprisingly helpful customer service person put me in contact with the person in charge of meters in the state. He's talked to the sub-contractors and told them to pay attention to net meters and said the sign was still a good idea, with his number on it. I've informed other PV owners I know, but some have already been changed, and not changed back after weeks of complaining.
All for now...till next time...
jms