美国采购需求：三头肌绳、阻力带手柄、人体工学哑铃、地雷架、附件配件、杠铃地雷球

I recently bought this product for my wife on Amazon, and unfortunately, we've encountered an issue where the webbing has started to fray quite severely. This has rendered the item unusable, which is really disappointing given that we expected better quality. Could you please provide me with guidance on how to initiate a warranty claim for this product? I would appreciate any specific steps or information you can share to help resolve this issue quickly. Thank you for your assistance!