Billing issue regarding ongoing charges for canceled streaming package

Hello, I am reaching out for assistance with an ongoing billing issue on my account. I previously had a promotional discount for adding a streaming package to my internet plan. After the promotion expired and the bill increased, I canceled the streaming package online through my account.
However, I am still being billed for this package on my latest statement. I need assistance reviewing the charges, confirming the cancellation, and getting an adjustment or refund for the post-cancellation fees. Please let me know when an official representative is assigned so I can send a direct message with my account details. Thank you!