We're sorry to hear about this. You should change your Firefox Account password, and look for information from your device manufacturer about erasing your data remotely.
Niqamäy niqak'axaj re re'. K'atzinel najäl ewan rutzij ri ataqoya'l richin Firefox chuqa' takanoj rutzijol ri b'anöy richin ri awokisaxel richin nayüj chi näj ri taq atzij.