"Your final option is that you can wait for the chill to be removed by DTCC. There is no typical timeframe for the chill to be lifted. Also there is no guarantee the chill will ever be lifted by DTCC. Chills may be put on a security for many reasons. DTCC does not share these reasons with us, as the information is proprietary in nature."
Sorry about your luck, but thanks for the enlightening post.