Called our business advising they are from Intel, they wanted to speak to someone called Mark. They were arranging a webinar. No one works for us called Mark and she had a loud TV on in the background and I struggled to hear her.
Received a call on my work line. I answered with company name and first name. In an Indian accept he asked how I was. I responed I was fine. He said thank you and hung up.
Finding out there's an answer at your number is all he was shopping for. As soon as you noticed the accent, it wouldn't have hurt just to hang up on him.