I signed up 15 months ago and have been satisfied so far-have taken and passed 4 exams with TCN material. My complaint is twofold-both having to do with money. First, TCN has been paid in full for my materials and tests. I got my University to give me credit for a course that TCN didn't think I'd get, so they agree they owe me a refund of $730. I have been trying to get the money since January. In April they fianlly sent me a document in writing agreeing that they owe me, and still no money-it is now June. Worse yet when I tried to... read full review »