Frustrated with SwiftWireless Technologies Düsseldorf's lack of response

I'm updating my complaint because SwiftWireless Technologies Düsseldorf finally contacted me today. They've offered to replace the kitchen knife set, but I've requested a refund instead since I've already purchased a replacement elsewhere.

Dear valued customer, Thank you for bringing your concerns about our air purifier to our attention. We at SwiftWireless Technologies Düsseldorf 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 March 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 air purifier 2. Deliver a replacement from our newest production line 3. Extend your warranty by an additional 12 months 4. Include a complementary air purifier accessory kit valued at $267.28 Please contact our dedicated resolution team at support@SwiftWireless Technologies Düsseldorf.com with your preferred delivery date and time, referencing case number REF-1C7AD4CE. We truly value your business and appreciate the opportunity to make this right. Best regards, Quinn Jackson Executive Customer Care Director SwiftWireless Technologies Düsseldorf