Ge capital Michael Cox Scammed me Philadelphia Pennsylvania

So like everyone else on here i too was scammed by this Michael guy only difference ive read is that he actually deposited 800 into my account which i had to return in 8order to raise my credit a few points which i knw now was BS. when i got the funds he wanted me to return the money thru moneygram. first when the lady refused to go thru with the transaction becuz i didnt knw him personally. he suggested i send it back thru 2 walmart gift cards so i did. he said the funds would be deposited with in an hr or so. Few hrs went by nothing in my account he then told me to wait til Monday becuz it was a wkend. A day before my payday I checked my checkings account it was -800 turned out that he send a bad check n my bank somehow cleared it now im being told there's nothing they can do to get me my money back please dont deal with these a******* its a major scam.