Game codes to get SC on Free Realms

Sadly,there are no game codes for SC.i wish there was,but the only way to get SC is by credit card,game card(which i think they don't sell anymore.idk..),or by a phone i think it was.i was told that you can enter an SC code more than once,but i think the girl who told me was lying.but anyway,no game codes for SC.sorry people