After 160 days Energiesparleuchte defective

In advertising promises is that the burn time is the 10 times of a normal light bulb. This was definitely not the case with me. The lamp was about 160 days (not even half a year) to the energy saving lamp used no longer walked about 5 hours daily use. That is weak and does not meet even close the advertising promises. Maybe I've also just been unlucky. However, I would like to say that the warranty processing on Amazon as always exemplary. No quibble replacement lamp with refund of the difference to the more expensive initial purchase of the lamp.