I started a sketchup course about 2 years ago. Wha...

I started a sketchup course about 2 years ago. What a disaster! If only I had never started it. First of all, I already received outdated teaching materials and not suitable for mac users. Then I ran into a question in lesson 8. I asked the question to my teacher twice with an answer that I had already explained to have done. All lessons had now been closed with a 10 by the teacher, so I had nowhere to put my question as you can only do that when you hand in your homework. Then called twice. First time they told me to send the question to their email address. To which I only received an answer after 2x that I was not allowed to e-mail there. So called again and then I got someone on the phone who had little knowledge of everything. Now no answer to my question and one point head on. NEVER a course from the NHA for me!