I sent some coins that I mined to a peer to peer pooling account, and for the life or me I dont remember the account or website it was on, this was during the ability to mine with a gpu and cpu. I have my old wallet data and updated the feather core and all blockchain with latest updates.

How do I reverse the sent coins back to me, as I know they have not been spent, I was a NOOB at the time and didnt have full understanding.