That shouldn't happen unless we're scrimming, in which case we do restrict the channel solely to clan members. If we weren't scrimming when that happened, then I don't know how to explain it.
People don't take well to a lack of positive reinforcement. It's human nature. We DO give every applicant a chance (I've played with most of the applicants, and quite extensively with you), but that doesn't mean everyone's going to be accepted. If people receive no reply to their application, they feel unwanted, and they create reasons for that feeling. I assure you, we are in no way biased towards any group of people in the application process, but the fact is, not everybody is going to fit into the clan. Not everybody will be accepted, and the people who aren't will feel left out. I'm sorry that it happens, but it's the way that every clan works to a certain extent.