Hi Sir,
Sorry for the issue you faced but I am afraid I can not agree with your way of seeing things.
About the freezing issue, it is not just a YES or NO question, you can not conclude it is because of hardware faulty. The factors for resulting in freezing could be hardware, Operating system, Software, Environment Temperature and so on, how can you conclude it is not because of other factors but only hardware issue?
I want to ask you some questions:
1. Did you test the complete same situation on other hardware (Operation system, software, environment, everything but hardware ) ?
2. Did you test other OS on this board? Can you try Debian 8.1 64bit ? I have tested it for running over 1 month, still working fine. If Debian 8.1 can works fine and stable on your board, can you still say it is hardware faulty?
I am not saying Jaguarboard is perfect and no issues at all, even the great Apple sells broken iphones.
I just want you to conclude the result after enough test and provide solid evidence. If you can prove it is hardware faulty, we will replace you a fresh new board.
BTW, if you google keyword "RPi freezing", you will find lots of reports about freezing, can you say RPi is a bad product?