I got through to Rush once! It was December 1993, I was 19 years old. I told him that I found his book on sale in an English bookstore in Brussels. He sounded impressed. At the start of the call I gave a shout-out to my coworkers at the seafood restaurant I was part-time at. For the next two weeks we got slammed with customers wanting to meet "that nice young man who talked with Rush" :-)
I was able to record the call, I still have the tape too. Maybe someday I'll convert it to digital and post it on my website.