I could see it saying "I understand you want to reach customer representative", "Please select from these options while I connect you to a representative" while circling you around a graph of options or just automatically hanging up after 45 minutes to an hour of being on the call.
It's 100% internal metrics.
When I was in the military, there was some metric that the clinic was graded on - I think it was number of days between when an appointment was made and when the visit happened. So the clinics just didn't allow unimportant people to make appointments more than 2 weeks out.
Can get on with life until they ring you back then.
A call deferred is a call denied.
Convincing the customer to give up is one way to reduce workload.
See also: automated systems that play a prerecorded message along the lines of "we're currently experiencing higher than normal call volume" regardless of how long wait times even are.