Shopify Frostlay Sent Me a Fake Blanket, Then Went Silent After Promising a Refund

I purchased an "ice-cooling blanket" for $34 through frostlay.com.tr, which uses the Shopify platform, on June 9th. The listing stated that a sleep mask, earplugs, and a Frostlay ice-cooling blanket user manual would also be included as free gifts alongside the product. I made the payment by credit card through the Shopify website, and my order number is #1096.
When the package arrived on June 15th, none of the promised items were included; only a fake, low-quality blanket was sent. In other words, the product delivered was both incomplete and unrelated to what was advertised.
Following this, I contacted Frostlay on June 15th through their WhatsApp line and email. At first, they told me I could return the product and get my money back. I then requested a return code and return instructions, but after this message, they haven't responded in any way for days and have completely cut off communication. I also don't see any return option on my order page on Shopify. Although a Sürat Kargo tracking code appears on the order page, its status still hasn't been updated from "in transit."
Throughout this process, I've been harmed both by receiving the wrong product and by having my right to return and withdraw effectively blocked. Even though I also filed a complaint about frostlay.com.tr, no concrete solution has been provided so far.
I am requesting that Shopify, the company that provided the platform enabling this deception, fully refund the $34 charged from my card for order #1096.