No, they're protecting money on their company's table from being taken by random sellers. "Let's get on a call" game seldom leads to better deals for the buyer.

I see it like this. If the seller can have salespeople waiting on a call, there can be better deals somewhere else. If the seller can have people cold-calling other companies, there most certainly is a better deal around that they don't want me to know about.

Over the years I have developed a salescall aversion to the grade that I hang up as soon as I my unconciousness have detected one. It has gone so far that I have had to apologize to our salespeople calling me and I just hang up by reflex. Very awkward I tell you.