That does sound abit weird how none of them are working for you, I know that poloniex are dealing with high traffic and are not coping. I sent them a query email 9 days ago and haven't heard anything back. Kraken and bittrex I'm not to sure as I haven't used them yet, is there another number you have access to, parents/ partner someone you can trust, when I set an account up with them yesterday the txt came through instantly