FNB no response over a month

I updated my credit card and paying off the old balance, the charge was transferred to the new credit card as expected .I raised this issue over a month ago but have not received any response. This delay is unacceptable

To resolve this matter promptly, I kindly request that someone from the appropriate department please reach out to me as soon as possible. It is crucial to have the erroneous charge removed from my new credit card, ensuring that my account is accurate and up to date.