Quality issues with The Advance School Group product

The situation with The Advance School Group has gotten worse. Now they're claiming I never purchased the upgrade plan, despite me providing the receipt and reference number REF-20C8B2AA multiple times.

Dear valued customer, Thank you for your complaint regarding the athletic shoes you purchased on April 14, 2025. At The Advance School Group, customer satisfaction is our top priority, and we take all feedback seriously. We have thoroughly investigated your case and have identified the source of the issue you experienced. We would like to offer you the following resolution options: 1. A full refund of $269.29 2. A replacement athletic shoes with an extended warranty 3. A store credit of $269.29 plus 20% for your inconvenience Please let us know which option would best satisfy your concerns by responding to this message or calling our dedicated customer resolution line at 1-800-555-1234, reference number REF-20C8B2AA. We value your business and hope to restore your confidence in our company. Best regards, Thomas White Customer Service Manager The Advance School Group