That is odd... at what point did the address change to the one in the pic... obviously you can see what is there now no longer matches the address you sent BTC to.
Coinbase is the only one that can assist any further. While I know it is crap to have to be without that coin for now... you may not be out completely. If Coinbase does determine something went wrong, your coins can be tracked.
4 days passed and no response. I think my money its lost.
The address in the pic is new, I think its from today. My address also changed two hours after I made the first transaction, the one in which I lost my money.