I didn’t record, but Jerome Segura of Malwarebytes did!
Just got called by “Windows Technical Department”. This is the gang somewhere out in the world who pretend to be Microsoft, and get people to download malicious software (obstensibly to fight viruses). After which they take over the computer and steal information like bank logins, etc.
Sadly after I asked if they enjoyed being a criminal and “do you steal money from a lot of people every day?” they hung up.
Wish I could record calls at home.
Update: According to this article from Wired UK, they don’t steal your info, they sell you a massively expensive “virus protection program”, then delete all your files.