Bests & Worsts Reviews from Amazon

I bought one of these two years ago, red, 48" but when I wrote to the manufacturer asking if it was defective appearing to have a hidden leak ruining the internal supports that run up the sides. The response was YES, and I got a refund. The walls bow out and finally fail. I bought this large blue one last fall figuring that if they knew there was a defect, it would be fixed by now. Why else would Amazon continue to sell unless fixed? Well the heat hit and I put it out about two weeks ago. Within 4-6 hours, the walls started bowing out. Not sure the volume but quite a few gallons of water and I live in drought stricken CA. Drained it and found nothing. No tiny holes, cracks, nothing visible. My guess: There is a problem with the seal to the drain, which appears to be actually made for some other purpose, that allows water to seep into the walls. They feel made of heavy cardboard so they act like sponges. The old red one appears off the market and this one should also be removed. They have not even attempted to fix the problem, just stop one and make a new model. Same problem though. Why does Amazon continue to carry? Save your money, this is $100 bucks down the drain.