I got two calls to one of our office numbers, same as reported here, heavy indian accents, first call was a guy called Zim, second was St Jordan. First i told him straight, we have network administrators sorry i don't believe you, please don't call me again.  Second call i played along for a while, googling what he told me to do, asking him what it did and how it would help me.  Then told him to stop scamming me, It wasn't going to work and DO NOT CALL this number again.. and hung up.  He tried to tell me it wasn't a scam andtried to talk me out of hanging up, but i just repeated myself and slammed the phone down.