I get irritated waiting also. But at the CVS I use (and a lot of others as well), the pharmacists all work in plain view of the customers and they are always busy counting and pushing pills. Can't figure out how they can look that busy and at the same time be slacking off wasting time (I've never been able to successfully pull that off at work

).
I must say that whenever I've had to speak with one (not one of their assistants) they've been patient, courteous and helpful. So, I give them the benefit of the doubt and try to grin and bear it.