I am sorry to hear about your bad experience. You can contact the Monadnock Board of Realtors to file an ethics complaint, or the New Hampshire Real Estate Commission to file a complaint for license violation. Before filing an ethics complaint, get a copy of the Realtor's Code of Ethics, so that you can cite the exact Standard which was violated. Before filing with the Commission, look up the NH RE Commission website and read the regulations which apply to licensees. A complaint will likely be dismissed unless the Commission can connect the licensee's behavior with a specific violation of a rule. If they acted legally, within their license, a complaint will get nowhere if it is just that you are unhappy. But if there was a fraudulent misrepresentation, for example (perhaps telling you that a sewer inspection has no meaning if it is a public sewer, since that turned out to be false).
I am wondering why someone who was aware of the advantages of having a buyer's agent would first work with someone representing the other party, and defer hiring a buyer's broker in case it doesn't work out? By the time you realize that it has not worked out... well, you know!
Steven K-Brooks, Licensed Real Estate Broker in VT & NH
Practicing EXCLUSIVE Buyer Brokerage (Buyer's Only) since 1996