I ordered the Bossa aids. The first pair did not work for me so like a dummy I let them talk me into a so called better pair, yes for more money. When I got those they didn't help either so i sent them back too. They sent me a new Pair. Guess what, those did the same as the others. They Squealed so bad, didn't fit right in my ears, still couldn't make out words. So I sent them back. I was told that I was entitled to a full refund. That was 2 months ago. I call to only get a busy signal, live chat is never available, and they don't answer your emails. DO NOT ORDER FROM BOSSA HEARING AIDS. SCAM!!!!!