Every few days I get a call from a lady with an asian accent claiming to be from Microsoft Windows. She says that they are aware of a problem with my system. She then asks me to sit in front of my computer with my desk top on and follow her instructions, she asks me to press keys simultaneously, usually the Windows and R keys. I always refuse, but she always comes back a few days later. Am I right to be suspicious or am I being paranoid. Does anyone else get these calls?