I sent back the product months ago thinking I was clear of charges . Next thing I get months later, is a bill from a collections agency who would not give me phone number for American Medical. I have no way to fight this. I am furious!!!!!!!!! I think this is a scam because there is no way to get a hold of the company who sent it to collections. I do not understand why I am having to deal with this nearly a year after sending the product back to the company. I think they rely on the total frustration of the customer who eventually gives up and pays even though they owe nothing.