Baseus Charger Out Of Order In 3 Month Of Proper Use

I purchased a Baseus charger around May–June through the Taobao platform in China. Around mid‑September, the device stopped working properly and now none of the four sockets charge at all. I contacted Baseus customer service to request support, but they replied that since my order voucher is not from an official Baseus channel, they do not have the authority to handle after‑sales issues and advised me to contact the original seller. I find this response unsatisfactory, as I am facing a clear product defect after a short period of normal use. I request that my defective Baseus charger be repaired or replaced so that I can continue to use the product safely and as intended.