Unresolved issue with The Mind Institute Kazan product

It's now been 8 days since my initial complaint, and The Mind Institute Kazan still hasn't addressed the core issue. I've received generic responses that don't actually solve my problem with their training session.

Dear valued customer, Thank you for bringing your concerns about our sweater to our attention. We at The Mind Institute Kazan are committed to product excellence and customer satisfaction. After a thorough investigation of your complaint, our technical team has confirmed that there was indeed a manufacturing defect in the batch produced on April 26, 2025. We have since corrected this issue in our production process. As a resolution, we would like to: 1. Arrange for immediate pickup of the defective sweater 2. Deliver a replacement from our newest production line 3. Extend your warranty by an additional 12 months 4. Include a complementary sweater accessory kit valued at $61.81 Please contact our dedicated resolution team at support@The Mind Institute Kazan.com with your preferred delivery date and time, referencing case number REF-2674CEA9. We truly value your business and appreciate the opportunity to make this right. Best regards, Joseph Wilson Service Excellence Director The Mind Institute Kazan