The staff was wonderful, they took time to answer all my questions, showed me how to use the CPAP and then had me practice, so when I got home I knew exactly what to do and how to take it apart and put it back together. They also called to check to see how my CPAP was working for me. I even needed to change my mask and the person answering the phone was very helpful and kind. I am grateful for my CPAP even though it takes some getting use to. I can think more clearly now and I can remember things!!!! Thank God for the CPAP machine.