Bests & Worsts Reviews from Amazon

I am very disappointed in this product. I had been hoping for something like this for some time. I have had a small Olay spin brush that I have been using for years that I love, I wanted something larger that I could use in the shower for my back that I have a hard time reaching with the loofah. This seemed to be perfect, so I bought it. I put brand new batteries in and turned it on. My first impression was wow, it's loud. But I can live with that. The first time I used it, it was fine, but the brush seemed to slow down and stop when you use too much pressure against your skin. The next time I went to use it, it wouldn't turn on, I thought maybe I had left it on and the batteries were dead. New batteries, nope still wont turn on, I wacked it hard against my palm and it came on. Again, the brush stopped moving whenever there was too much pressure against the skin. The third time I used it, again it wouldn't turn on when I pushed the button, I wacked it hard again and it still wouldn't turn on. I set down on the edge of the tub, (so I wouldn't forget to bring it downstairs and see if I could figure out what was wrong with it, maybe this time the batteries really are dead.) to continue my shower and a few minutes later it kicked on all by itself sitting on the edge of the bathtub. This time I couldn't get it to shut off until I wacked it hard against my hand. Last night, even wacking it hard couldn't get it to turn on. I never had a chance to use any of the attachments beyone the brush one. The rest are still in the box. I feel like I wasted my money on something I had high hopes for. If I hadn't used it four or five times, and bought it here, I would be returning it. I am not sure it's worth the hassle of trying to ship it back. That's what I get for not reading ALL the reviews.