Professional Conduct: Prominent Attorney Representing City Refuses to Reply As Promised

My question relates to legal practice in the state of: Tn. Attorney for city in eminent domain proceeding has promised to defendant by certified mail "I will be glad to respond to your questions." He has not responded to any of my questions as promised in the taking of my property. He has also informed employees and officials of the city he represents not to respond and direct all involved in this court action to contact his office.
As a result, I have no avenue to get any relative information for my case.
Has he violated Rule 4.1 of the ABA rule of ethics or any other ethical guidelines?
Thanks for your help and suggestions.

Professional Conduct: Prominent Attorney Representing City Refuses to Reply As Promised