The techs at Cpap Unlimited are great. They have always been more than helpful. This is regarding the billing department. In late 2010, I received a bill in excess of $300.00 for services for items as far back as 2007. I never let my bills go unpaid yet was told by the office staff that they have been billing me all along. This is untrue. I am not sure if I have any rights in this matter but am finished talking to them. I will find a different company to do business with.