If you haven’t heard back by the 27th, then send a follow-up email or text. Mercury's square to Neptune implies that your application or request got lost in the mix. Most people would feel rejected and would probably slink away, but you're an Aries, which means you're made of sterner stuff. Insist on a response, and it should show up by the end of the week. It's never pleasant being treated like an afterthought, but this is more a reflection of the person you're waiting on than it is on you. If anything, it shows how disorganized they are and that you're sorely needed.