very unethical, stay away

I paid $2000 for a Windows training and I also received the free iPad as promised. After that they claimed the pass guarantee isn't valid anymore since I've got this iPad. This was never told before. I also bought 5 vouchers for half a thousand and after using one they said I can't use any more until I pass the first examination. Have to pay another hundred for an exam voucher now. Stay AWAY!