> There is nothing like being on a call when the product isn't working right and the customer has 28 people from their side and only 2 of them know anything about the subject, but 26 of them have very strong conflicting opinions.

This is no problem per se if you, for example, don't score too high on the Agreeableness dimension in the five-factor model. [1] :-)

The problem rather is that the people who by their personality traits can tolerate such situations quite well are very often not the kind of people that customers want as support contact persons and vice versa.

[1] https://en.wikipedia.org/wiki/Big_Five_personality_traits

Heh, I'm agreeable when (at least I) think you are doing the right thing, and get short pretty quick when I feel like you're wasting my time.

I've learned a number of strategies over time dealing with crap like the above. Typically it's getting a manager/customer service on the call with the large group and taking the people I want on the call off to a separate call where things actually happen.

Most of the time we'll have things fixed, or at least a plan for a solution done before the big group has got past anything at all.