Renogy review: Defective battery still under warranty - company avoiding a return of product

I purchased a new Renogy 100 amp hour lithium battery from this company on December 12, 2022 via ebay. It no longer operates properly and I have been trying to get the company to honor it's one year warranty. I spent a couple of hours with them via their chat support on 10/27/2023 while they continuously had me conduct tests on the battery, take photos, send them invoice copies, etc. Generally run me through a bunch of hoops that no other decent company would require. Upon my insistance they provide return authorization they would only provide a case number [protected] and stated that a return authorization would be sent to my email. I contacted them again on 10/30/23 via chat with the case number after not receiving a follow up email. I was told that their team was in process of working on my request. I view this response as an obvious delay tactic by this company hoping that I will simply go away. This company should take steps to honor their product warranty and provide the after sales support that reputable companies do each day.