Bests & Worsts Reviews from Amazon

See below for my first write-up and the problem I had. I wrote to Amazon and they refused to replace the pressure cooker (PC) because I had purchased it more than 30 days ago. I wrote the amazon seller directly and they said the same thing. So, I called presto and someone actually answer the phone (!). I explained to the rep what had happened and they agreed to replace the unit; all I had to do was send them the lid and they would send me a new unit. Presto's customer service was top-notch. They not only replaced the unit but gave me tips on how to keep my issue from popping up again. Presto is a good company with a good product. THANKS TO CINDY FROM PRESTO CUSTOMER SERVICE! ------ My first review... Hello, I am writing you to inquire about a replacement of my presto 23qt Pressure cooker. I purchased my presto cooker through amazon, but that was in April and they have directed me to speak with you directly. I purchased the PC, read the booklet on its set up, care, and use. I have used the PC 4 times and this last time the bottom bowed and it now wobbles. I am concerned it will no longer work properly and may be unsafe. For the context, here is how I used it, and how I typically use it. I loaded my pc, which had plenty of water (and had water in it when I opened it after cooling). I even used several trivets to ensure the PC had sufficient water. I brought the PC to steaming and when sufficient steam was coming from the port (which I check before operation) I put the weight on the port. I brought the PC to 15 PSI and PC'd for 2.5 hours at 15 psi. I used a timer, watched the pressure gauge and the heat. removed the timer promptly. I sat in the same room with the PC the whole time. At this point, the bottom part of the cooker is bowed. It will not sit flush on the burner or other flat surfaces. I followed the care and instruction to the letter. I would like to have this unit replaced. Amazon will not take it back because I bought it 6 weeks ago. Since I follow the same procedure each time and have only used it 4 times, I believe the unit was defective. How can I go about getting this replaced? Kind regards, Jack Gilbert