Dealing with Lincare has been one of the worst experiences in my 30+ years as a patient. I also have not encountered any similar operations during my work as a physician. This company is disorganized, unethical, and entirely incapable of identifying and rectifying their errors. I have paid them and zeroed out my account twice, only to receive phone calls and invoices asking for more payments. I have given them confirmation codes which they claim they cannot track down. by all means do your best to stay away from this company - you will lose your shirt with these folks. and for some reason the better business bureau has been unwilling to take action. that's probably due to their well-funded lobbyists, who unfortunately donate to our representatives. This seems to keep them out of trouble. But the Internet is more accurate - do yourself a big favor and find other companies for your health needs.