scam the scammers
Had calls from the latest bunch.
They were 'Calling from Microsoft' and started by asking me to run 'assoc' and find the zsendto CLSID as confirmation i had been 'hacked'
They provided more evidence in the form of warnings and errors in eventlog (all normal stuff) and asked me to install TV12 and initiate a remote control session then choose to give control over... Faked some networking issues and ended the session when they asked for control and tried to draw things out when they called back in order to report it.
TeamViewer support didn't answer their phones and they didn't respond on twitter. I had the session ID's and had a session open at the time but they didn't seem to care, this might provoke a decent response now.