assistance needed regarding final cancel Xfinity mobile balance, and unnotified plan changes

Hello, I am looking for a corporate agent to help review and dispute my final canceled Xfinity Mobile balance of $42.28.

My monthly plan pricing was recently altered without proper notification or warnings. Furthermore, when I requested cancellation at the beginning of September due to this unannounced price hike, the agent failed to disclose that Xfinity Mobile does not prorate final month balances.

As a result, I am being billed a full month's charge for September service that I did not actively order or use. Given the lack of clear disclosure and the sudden rate change, I request that an official employee look into my account to credit out this invalid balance and bring my final account to $0. Thank you.