My frustration with this company is in the lack of knowledge and unprofessional staff. To top it I have failed this test more times than I can remember for 1 point! Yes 1 point! Each time you take the exam there are new questions and some which are even in the book like it designed for you to fail! I was told they are allowed to have questions that aren't in the book and to just google the answer but how can you remember multiple questions at the end of a 4 hour test?!the remote exam prep never works and your told to call tech support which left me 2 1/2 hours late for an online exam only to be told to do ridiculous things like unplug my my tv in the next room and show my complete arms during the test! PSI really needs to take consideration of people's time, money and effort instead of frustrating you to the point you can't think before a test!