happened to me before too, but mine was MYR400 x 8 times i think, lol

straight file complaint and got my money back

their modus operandi is steal your cc info then sell fb credits to people at cheaper rate, those people use to advertise their posts, usually illegal gambling or other stuffs illegal ones

this way the money stolen cannot be retrieved back from them, but you can still get your money back from bank, they are like robin hood robbing from fb, hahaha