Anker has replaced my soundcore Boost and Powerline Micro 6ft cable. They have been responsive, polite, and generous. They did ask me to go through a few steps with the Boost, but it was legitimately defective and they sent me another. The replacement was obviously refurbished, but it works. They didn't ask questions about the micro cable, they just wanted the serial #. I think they already knew that run had some manufacturing defects
Compared to other electronics manufacturers, Anker is way above and beyond. I legitimately buy from them because I know they will replace anything that doesn't work as it is intended and advertised. I have no questions about that at all.
One thing to keep in mind: the replacement process take about two weeks. You just have to wait for them to process whatever paperwork they need.