I went to take an exam over a week ago and didn't find out until it was too late that you can only use the Mac OS with a certain version, and I didn't have it. Since I didn't know until the minute of the exam I couldn't take it. I've tried contacting certification support via phone; (415)836-2420 and email; email@example.com but they never get back to me. This happened once before too, and it was well over a couple months before I received an email back, and then another 2 weeks after I responded to that. I've talked to others having this same issue, some don't hear back at all.
Any suggestion would be great.