So if i understood correctly they haven't even broadcasted any transactions to your destination address onto the blockchain, right? The transaction is just pending and staying like that without any sort of TXID whatsoever.
If that is true then it's really common for coinbase, and it has a history of doing this. I've been effected by this multiple times although never as long as you have been waiting for.
Contact support as much as you can, hope they respond. But honestly their support is cancer.
WHAT HAPPENED IN THE END? DID THE TRANSACTION JUST GO BACK TO YOUR COINBASE WALLET.......................................................
"Contact support as much as you can, hope they respond. But honestly their support is cancer."
AND THANKS FOR THE ADVISE - JUST JOINED TWITTER TO CATCH THEM THERE - PEOPLE SEEM TO BE GETTING A QUICKER RESPONSE ON THERE