Bests & Worsts Reviews from Amazon

I ordered this chair back in September 2013. The chair that I received had a seat cushion that had a contoured design. It had two holes in the seat cushion, and it was tapered and angled. You can view the correct and original chair by googling "office star 5700e." As of this writing, February 18, 2014, the chair pictured on the Officestar website is the chair that I received on September 2013. I ordered this chair again in February 2014 because I liked it so much. I received a different chair. The chair that I received is the one currently pictured on Amazon. It has a completely flat and plain seat cushion. It does not have a contoured design with varying angles. The seat cushion is way too flat now. It isn't as comfortable as my old chair. Since when was it customary for Amazon to change the product for the exact same ASIN?