If funds were withdrawn from your account by someone other than yourself without your permission then your account credentials has been compromised which means you have probably been phished or you have malware, rootkit or a keylogger on your machine. You should change your pass phrase immediately and activate the two factor authentication to prevent this from happening again in the future. SR admins are unable to assist you with stolen funds, your computer security arrangements are entirely your own personal responsibility and no one elses. There is also a bug currently that has caused deposited funds appear then disappear only to reappear a short while later. Has your deposit reappeared or is it still missing?