yesterday i requested a withdrawl in socialcoinwallet but i didn't receive anything, just a message that says that i dont had enough bitcoins

I did something wrong?
Its a displayment bug, it refers to the amount left in your wallet here. So if you requested less than half what you had in wallet the displayemnt would be ok.
Still it will be normally processed. Admin just does that manually so you might have to wait couple days or so.