Query Regarding Incorrect Billing After Cancellation

I hope this message finds you well.

I am writing to dispute a charge reflected on my account for September 2025.

I cancelled my Rain subscription in July 2025, and my cancellation reference number is ***3. I was informed that my subscription would remain active until 1 August 2025, after which it would be cancelled. As expected, my SIM card ceased to function on 1 August, confirming that the cancellation was successfully processed.

My last payment was made on 25 July 2025, which covered the final billing period. As payments are made in advance, a payment for September would only be due on 25 August 2025. Given that I have not used the service beyond 1 August, I do not understand why my account reflects an outstanding amount for September.

Kindly review and update my account accordingly, and confirm that no further charges will be app****.