I almost never write 1 star reviews, but don't really have a choice in this case. I am doing much better with the new CPAP device which i obtained from Lincare, but definitely regret having signed up with this organization. There are many reasons for the low score, as follows: 1) They have not followed the contract which i signed when i initially picked up the machine. The billing numbers are all massively inflated. 2) They mistakenly mailed my invoices to an old address, though i had filled out all of current info. Then, after 5 months, i received a call from a collections agency. That's very unethical. 3) They are billing me for inappropriate components; for example, they never told me that they would bill for a humidifier chamber which is part of the device. This has been billed at over $30 monthly, which is really reprehensible and dishonest. The little gauze filters are billed out at about $5 each - really?) 4) The teams at both Lincare and Carecentrix are very difficult to reach, and are not taking any responsibility for the errors mentioned above. They are simply billing the insurance as much as legally permissible, plus more, and due to my deductible, the massive bills have all been sent over to me. I now owe them more than $2000, which is placing severe strain since i am not able to work at this time. 6) they are not really negotiating with me regarding possible solutions. I certainly want to reach a resolution, but they are not reasonable or supportive. 5) One employee agreed that i have been overcharged; however, she did not have the authority to adjust my bill. At least there is one honest person there, though she could not help me. 6) I have had zero assistance with my difficulties with my mask; they never set up any fitting appointments, but seemed to want to get me out of office as soon as possible. I was expecting to see an respiratory therapist at some point. I have submitted complaints to their office as well as the Better Business Bureau, but has not had any success to date. For your own good, please stay away from both Lincare as well as Carecentrix if you have any possible options elsewhere. It's been a real nightmare.