Please help

Hello all, today im playing with a friend a S&D, and my friend say me kick Ha12d, and i kick him, and he got kicked, later, he send me a whisper: why u kick me? and i say, a friend say me kick Ha12d, and he answer Ok, i report u and u got banned, and i say LOL they cant ban me for that, and he answer, ok, enjoy your acc couse i hack your acc today.

And a friend, got hacked his acc. And im scared, couse i can get hacked really, and i waste a lot of money in my acc, plz what i need to d