At this moment, tPF has 543,834 members, 5,448 of whom are online. And this doesn't take into account those who aren't logged in but are lurking offline but may chime in should they see a topic of interest to them.
So when you post here, you will reach over 1/2 million registered members with over 1/2 million points of view, over 1/2 million different cultures, over 1/2 million opinions!
Presumably, people don't post here when they're looking for agreement; you can look in the mirror for that.
They come here looking for OBJECTIVE and FACTUAL answers to their questions. And that's what you got. That you don't like it doesn't surprise me (because most responses didn't agree with what you and the seller did) but there was no rudeness and no bullying.
And in fact, ebay has been banning both buyers and sellers for going "off site" to conduct transactions. (Visit the ebay discussion boards (on ebay) to read about this happening.)