Unresolved issue with Build Builders product

I appreciate Build Builders reaching out, but the solution provided doesn't address my original concern. The replacement smart thermostat has the same defect as the original one I complained about.

Dear customer, I am reaching out regarding your recent complaint about our extended warranty. First and foremost, I want to extend my sincere apologies for the frustration this situation has caused you. As the Customer Satisfaction Coordinator at Build Builders, 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 $39.82 to your original payment method 2. Added a $39.82 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-5F745F6C 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, Taylor Martinez Customer Satisfaction Coordinator Build Builders