I generally give contact info and ask them to get in touch. Then I browse their product and say we're not looking for that product at the moment if we are not.

I generally give contact info and ask them to get in touch. Then I browse their product and say we're not looking for that product at the moment if we are not. If we are looking, I put them in touch with someone. However, I do think the most annoying thing people do is to ask for a call or meeting without a clear idea of what it is about. In that case, I just point blank ask them what it is about. "We could certainly schedule something next week, but could you tell me a little more about what you had in mind?" And then if it doesn't look like a good fit, I just say its not what we are looking for. The passive aggressive stuff doesn't bother me. On the contrary, it makes me feel like I didn't miss anything.