I am getting unsolicited tele marketing calls.

I am getting this irritating call from this number 91-80-41187475 which is a Bangalore number. I dont know the name of the tele marketer because it is a pre recorded message which says “Hello yaar why dont we book tickets for so and so movie at some place”

You initially mistake it to be some friend of yours until you realise that it is a prerecorded message. Calling the numbr back also doesnt help, it is always engaged; most probably busy playing the same message to someone else.

Please advise. I am getting these calls on my office number despite the fact that all our office numbers are registered under DNC registry.