Trendyol Refused to Refund My ₺300 for a Wrongly Delivered Product

I purchased a product with delivery number 8946898568 from Trendyol on November 11, 2024, from a seller named Olyssia. Instead of the white bustier sports crop top I ordered, I received a completely different product. During the return process, Olyssia incorrectly accepted a blue blouse, which does not belong to them, as the white crop and issued a partial refund of ₺80. When I reported the issue to Trendyol Assistant, I was told that Olyssia rejected my claim because they could not locate the blue blouse in their warehouse. This means I won’t be receiving my full refund of ₺300. Now, I’m stuck with an ₺80 product, and my ₺300 refund has not been processed. I expect Trendyol to resolve this issue and request that the camera footage be reviewed. Many others seem to have faced similar problems. If my rights are not defended, I will take legal action.