Have to pay for repairs

It is with great sadness to see that you want a customer to pay for a repair of an inverter that is still under warrenty. I don't know how the customer should pay for it. I mean as you could have seen on the inverter that it still has been sealed and not tempered with. I don't know how you get to your conclusions on your report but unfortenatly it is incorrect. So in good terms please explain how I should pay for something that is still under warrenty or refund my money back then. Thank you