Sent Litecoin to Bitcoin address, please help!

I accidentally sent LTC from GDAX/Coinbase to a BTC address on the Bitshares exchange. I can search the BTC address on the LTC blockchain on blockcypher and its there sitting as unspent. I tried contacting coinbase which if you know, they have not gotten back with me. Is there any way to get those back or do you know if it will come back after a certain amount of time? It has many confirmations which is stupid.

Any help would be greatly appreciated

u just need to wait they will cancel and sent it back to you . bitcoin address cant accept ltc btw