You can check whether the transaction went through by typing the bitcoin address you sent your coins to, into https://blockchain.info/
If your transaction has had at least 10 confirmations, then the next step is to raise a ticket with coinbase.
You can check whether the transaction went through by typing the bitcoin address you sent your coins to, into https://blockchain.info/
If your transaction has had at least 10 confirmations, then the next step is to raise a ticket with coinbase.
If he sent the coins from shapeshift, they should have the bitcoin address the coins were sent to.