I have mailed a copy of my doctors updated notice that I require oxygen 24/7 to your desk at email@example.com, and it is not picked up yet for three days? I spent and hour waiting to talk to your desk and then tried to mail this document. I t is MOST difficult to communicate with your company. What do i do????? Sincerely, David T Hardison, firstname.lastname@example.org, 919-493-7443.