Commissioners do not generally maintain an office or office hours, the Executive Director is their day-to-day, hand-on designee. I would suggest working up the chain of command in the appropriate bureau and division. I suggest you start with the regional office, then the state wide chief of fisheries management, then the Director for Fisheries, then the Executive Director of the agency.
I cannot swear by the accuracy of the following, but it is the best info I have at present:
Regional office for Area 7:
844 Big Spring Road
Newville, PA 17241-9473
Telephone: (717) 776-3170
Division of Fisheries Management
1601 Elmerton Avenue
PO Box 67000, Harrisburg 17106-7000
Chief, Dave Miko
(787) 705-7832
Bureau of Fisheries
Director, Leroy Young (814) 359-5154
Executive Director PFBC
Doug Austen (717) 705-7801.
I would make these other suggestions:
1. Be polite;
2. Give each level an adequate opportunity to respond;
3. Trade in an accusatory tone for an inquiring one.
If you feel you must contact Mr. Bachman a search on Google of his full name may turn up a copy of his resume or something with an address and phone number.