buyers agent

i had received a call from some clients concerning one of my spec homes,,  now mind you , these clients were from another city, about 3 hours away... after discussing the property with the wife, and just about done ., i offered to show them the house , and out of the blue the husband got on the phone and said i dont do buyers agency,, he proceeded to tell me that he has bought lots of homes and would not deal with the agent. and only wanted to deal with the builders.. i was like OK... and proceeded to tell him that no agent would write on a home , that was listed in mls without a buyers agency agreement signed from buyer... even if it was for a specific listing only.. , i sorta giggled to myself, thinking that every piece of ground or home here in centre county had an agent attached to it,,  to his luck was slim,,,, so me the the good agent that i am,., i sent him all listings from our mls in there category.. shame on me ..??? yes or no??   thanks .....