I haven't had to wait more than a minute or two in the last couple of years.
I called Wednesday night (had a thursday flight to JFK) and got through in about 30 seconds.
Are you guys putting in your skymiles number correctly when prompted?
I used to have long wait times many years ago before I was a PM, but as I said, I haven't had any problem getting through recently. Getting what I need done can be more difficult of course.