Trendyol Seller Didn't Ship My Product and Doubled the Price

I just bought something on Trendyol from a seller named Gülpınar MB on September 15, 2024, and what happened after was totally inappropriate. The product was never shipped, even though the shipping date had already passed. Even worse, I later found out that the seller had put the item back on the market for twice as much as the first price. After this, I felt lied to and wonder if the problem was with Trendyol or the seller and not the service. I believed Trendyol would run a trustworthy market, but this event has made me doubt that. I'm going to talk about my experience on social media so that other people know about this practice and don't have the same bad experiences. I don't think you should buy anything from Trendyol or this seller.