Bests & Worsts Reviews from Amazon

Like it at first, handle a little big for my hands, women glove size M. Bought and used it in the spring, it held up well and was easy to dig with because the soil were damp with rain. Now it's mid July, ground is hard and dry, the trowel bend and deform completely and with that the non rust coating crack and break. See my photos. This trowel is advertised as unbendable and unbreakable, and there's a lifetime replacement warranty, but I look but cannot find seller contact. Anyone knows seller contact?