Naive/obvious questions:
Have you
a) done everything listed at https://dev.twitter.com/docs/streaming-apis/streams/site#App... ?
b) considered getting on a plane to SF, spending a few weeks there, and network like hell, in an attempt to meet face-to-face with someone at Twitter? You said you're desperate, so all options are on the table, though I suspect I'll get shot down for suggesting this.