I just got a dumb call from the oxygen company about my bipap... Telling me I'm only at 80% and I'm still experiencing sleep apnea... They want me to have another sleep study. What's another study going to prove? I hardly slept through the first one. The mask doesn't stay on my face the way its supposed to so of course I'm not 100%. She asked me if I was getting a good sleep and if I was sleeping during the day? I sleep during the day but only because my sleeping habits suck and i stay up all night... These people frustrate me.