Anyone that works in a call-centre type enviroment or where the majority of contact with the customers is done through the phone.
But in particular anyone that cant do anything other than follow a pre-written script.
"Hey have you ever tried to have a conversation with someone from a Bangladesh call centre ?". "Yeah, its near impossible though, they are all phone monkeys !"
A slang term used to describe a phone-in customer, who is so unprepared in their questioning, and ignorant of their own specific needs, that their attempts at communication to the listener, sound almost primate-like in nature.
"The 'phone monkey' on other end of the line, can't tell me what kind of bike he has!"