WC glasses with blue LEDs

I purchased this product about 6 months ago. At first I was happy with it. Once the lid of the toilet glasses was opened, shone the glasses in a beautiful blue. After a few days but then the LEDs! Functioned in the toilet glasses or not they shone very weak. Even changing the batteries did not help. But worst of all, as recently suddenly began to burn the battery compartment without my help and ran away. Fortunately, I was at the time just in the bathroom and have noticed it. It was smoking and smelled terrible and since the toilet glasses is defective because the LEDs of course no longer light up. But the hammer is that I have dozens of times the seller (DS Shipping) also contacted in writing both by telephone. I have in DIVERSE emails called and complained about this case. But there was no response. And the phone is not even someone ran. That's the last and so you angry customers. I would never buy again at DS Shipping. This product is defective and dangerous! And the supplier can not be reached and of customer service and exchange is not to be thought !!!