Vital Care has given my husband the worst service imaginable. They do not return calls, service the equipment or help get supplies in any way. The oxygen concentrator finally quit working so my husband took it in. They gave him a receipt for it and offered no other machine or any help. Because of the Medicare rule for keeping it 5 years no other company will take the account. My husband is without nightly oxygen. I wouldn't give Vital Care 1 star if I could.