I received the Nikki Johnson call today. It was very threatening and ended by saying the police will arrest me in 1 hour and my possession would be confiscated and I'd go to jail for 2 years. telephone number used was 415 234 0513 I asked for officer's name and was given in badge # 1000184182. I then called my accountant and they informed me it was a scam. It has left me very frightened -- they know my address.