said they were from microsoft and they had been getting error messages. said someone from China had loged onto my computer. they thought there was a security breach and wanted me to turn on my computer. when I asked for clarification, he said "don't you understand English?" he asked for a different phone number. I said I did not know how to turn on my computer for him to "HELP" me and I hung up the phone. I have been callng windows tech, so I thought this may be real-NOT, they just haven't called from that number before. another number to BLOCK