I wholesale auto parts and we are taking customer calls all day long-these robo calls got so bad (messing with them wasn't even fun anymore) that my manager FINALLY got the IT guy to put in a 'tree'. When you call in now- youre prompted to hit '1' for the parts dept, '2' for the credit dept, etc....has cut the robo calls off almost completely!
The ONLY time I miss them is when its slow on a Friday afternoon....my coworkers and I used to see how long we could punk the boiler room people on the other end....some of them got very upset and verbally abusive!