Sorry to hear that you are having trouble with your PiJuice, however what you describe is unlikely if not impossible. As Dougie says there is nothing to "brick" on the Pi.
Can you actually describe in more detail what the issue you have is?
And before posting inflammatory titles suggesting our product has bricked your Pi it would be great next time if you could actually ask for help first and confirm that is the case. We do have official support channels including on out GitHub page https://github.com/PiSupply/PiJuice