It isn't that there's an inherent problem with people who only want to stay on a call for 2-3 minutes, but what happens sometimes is people will send 3 free minutes, someone will call in with the free minutes and ask for a reading on some topic, and if the advisor can't answer all of their questions in 3 minutes then some people will get mad and leave a bad review.
I don't know about you but I do some Lenormand reading (for myself and friends, not for pay) and there's absolutely no way I could ever give a decent reading much less a good reading in 3 minutes. It takes that long just to understand the issue, formulate a good question, shuffle, lay the cards and even attempt to interpret them. I get that time is money but people who do this, their expectations are insanely unreasonable.