Well damn... and I am assuming you have confirmations on your DASH txid then. I hope support get back to you. I just bought some about an hour ago and they arrived promptly after I got 3 confirmations on my BTC transaction although the exchange rate was a little low. I am guessing it was the fee taken out for shapeshift.
i can prove everything, i sent to them 2 mail with DASH id transaction, eth address ecc..., i double checked on their site eth address - dash address just to know if i was wrong with the DASH address during dash transaction. Nothing, everything is ok but they are just ignoring me, after 24 hours my first mail they answered me that they are solving problem in 2 hours, nothing after 5 hours