Very good results at first, then less and less, I was told

I had been told that I would be able to do without injections thanks to the skeen patch, which motivated my purchase, but I'm disappointed. I thought my device wasn't working any more because of the poor results, so I asked the company to check my device, and well, they can do it, but there'd be a charge for the procedure, which is a bit hard to take in view of the price I paid. Between the batteries and the patches that I change regularly and the poor results, I have to admit that I'm very disappointed.