How write a letter to bank ATM card not working?

Subject: Request for Assistance with Non-Functional ATM Card

Dear [Bank Name] Customer Service,

I am writing to inform you that my ATM card (Card Number: XXXX-XXXX-XXXX-XXXX) is not functioning properly. I have attempted to use it multiple times, but it has been declined each time. I kindly request your assistance in resolving this issue or issuing a replacement card. Thank you for your attention to this matter.

Sincerely,
[Your Name]
[Your Account Number]
[Your Contact Information]