"Hello, this is Raja C******b. The purpose of this call is not a sales call. I would like to send you a free podcast examining <blah blah blah> and its impact on <blah blah blah>. I have your email address on file. May I send this to you?"

"No. Because this is not free, since my time is money. And also because this IS a sales call."

"It is not a sales call, sir. We would like to send you a free podcast..."

"... that will try to sell me something."

"No, sir. It is a free podcast examining..."

"...Something that will try to convince me to purchase a product or service."

"Ok, yes."

"Ok, bye."