Hello everyone , yesterday afternoon around 17:00 PM , my brother was hacked Fuochista92 . . how can I get it back ?? If anyone can help me .

hi, my accunt luigi_e_toto is, I do not know why, but the equipment was mistaken for a purchase railgun without clicking. had 33,000 diamonds now I find myself with 1689. Can I get my diamonds and get this off railgun?