We do have some backlog in processing these requests, but not as dramatic as you may indicate. Response times are typically around 72 business day hours, and with the current backlog you should expect longer than this.
Is the email address you’re emailing from the exact one associated with the twitter @username that owns the application you’re requesting access for? Doubly verify this. We don’t see any tickets in our system from @zumobi. Make sure that when you do send an email that you include every piece of information necessary to make a determination.
api@twitter.com remains the email address to send these requests to.