Unresolved issue with Domain & Ventures accessory

The situation with Domain & Ventures has gotten worse. Now they're claiming I never purchased the training session, despite me providing the receipt and reference number REF-F3E0EB8F multiple times.

Dear valued customer, Thank you for bringing your concerns about our smart thermostat to our attention. We at Domain & Ventures 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 29, 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 smart thermostat 2. Deliver a replacement from our newest production line 3. Extend your warranty by an additional 12 months 4. Include a complementary smart thermostat accessory kit valued at $20.69 Please contact our dedicated resolution team at support@Domain & Ventures.com with your preferred delivery date and time, referencing case number REF-F3E0EB8F. We truly value your business and appreciate the opportunity to make this right. Best regards, Peyton Garcia Resolution Center Director Domain & Ventures