Hi Guys, thank you very much for the support. Just to be fair, Oxycheq did reply to my email over the weekend. They explained that they tried to recreate the problem but was not successful and that they don't know what caused the failure. The reason why my wife chose a padded harness was because during our pool sessions we learned using a jacket type BCD and she feels more comfortable with the paddings.
I'm not really sure what happened here nor do I know how to proceed. Btw guys I am not based in the US, I'm actually in the Philippines and bought the Oxycheq from an autorized dealer. The dealer has finally agreed to give me a full refund but I'm just a little annoyed that only me and my wife feels the gravity of the situation (or are we over reacting?). My wife could have been seriously hurt or worst and all we get is an "ooops, sorry about that, here's your money back. Thank you! Neeext!" I just think people in this industry should be more accountable of their products. These are just harnesses, I don't think it's that hard to make it sturdy enough to be safe. Btw the reason we chose Oxycheq was because firstly it's made in the USA and secondly we love the small foot print of the wing (ok we're newbs so we are not sure if we are qualified to give this statement, for all we know this might not be a small wing after all). Oxycheq was not the cheapest BCD in the store, in fact it's more on the expensive side. We thought the price premium is an indicator of quality which added to our disappointment.
Anyways thank you for all your suggestions and advice, they are all greatly appreciated.