Please, post these kind of things in the press releases of your airline that the CEO is p***ed. But do not use the general discussion forum to let everyone here know that your airline is not welcome in an alliance because they do not reply.
Let me put it around...
If you file an application to join, but won't hear from them in let's say 48 hours.... Then you also know how their alliance is managed and how active the members are.... You still want to be part of that?