I received my bitcoin through an atm last night. I transferred them funds to coinb.in. I then transferred roughly half of the those to AB which never made it there. my balance was deducted but the coins never showed on AB. The half that I send over to AB is showing as unconfirmed in my transaction history. When I try to touch the other half of my funds it won't let me do anything with them at all either. It keeps giving me the error code 258: txn-mempool-conflict.

Please let me know guys. I have a lot of money tied up here and can't do anything with it.