美国采购需求：磷酸铁锂电池BMS、BMS管理系统、BMS自动化系统、锂电池BMS、18650电池BMS、主动式电池均衡器

I recently purchased a battery management system from Amazon, but unfortunately, it turned out to be defective. I've tried contacting Amazon for assistance, but they haven't been helpful in resolving the issue. Considering the circumstances, I would like to know if there is a possibility for a refund or if a replacement BMS could be sent my way. I appreciate your understanding of my situation and hope to find a satisfactory resolution. If you could provide guidance on how to proceed with this matter or the next steps I should take, that would be greatly appreciated. Looking forward to your prompt response on this issue. Thank you!