Quality issues with Excel Center of University Daegu product

I'm updating my complaint because Excel Center of University Daegu finally contacted me today. They've offered to replace the fitness tracker, but I've requested a refund instead since I've already purchased a replacement elsewhere.

Dear customer, I am reaching out regarding your recent complaint about our customization service. First and foremost, I want to extend my sincere apologies for the frustration this situation has caused you. As the Client Relations Manager at Excel Center of University Daegu, I have personally reviewed your case and have spoken with the team members involved. There appears to have been a miscommunication regarding our service guarantees, and I take full responsibility for this oversight. I have taken the following immediate actions: 1. Processed a refund of $377.42 to your original payment method 2. Added a $377.42 service credit to your account for future use 3. Implemented additional training for our staff based on your feedback Your case has been assigned reference number REF-B1AE47B5 for any future correspondence. Please allow 3-5 business days for the refund to appear in your account. Thank you for giving us the opportunity to address this matter. Your feedback helps us improve. Sincerely, Riley Martin Client Relations Manager Excel Center of University Daegu