Were you ill treated at the shul beyond not being offered the amud?
I was thinking a similar thought. While I would not be surprised if a shul would not want to send up a shaliach tzibbur whose dress clearly represents a different hashkofo than the tzibbur he is supposed to be representing, it would surprise me if they would have a problem giving an aliyah, for example.
and b)
I find it ironic that this was done in a thread whose purpose was supposed to be about ahavas Yisroel.