Unable to cancel two unused Mobile lines — live chat fails and SMS unanswered

I need to cancel two unused Xfinity Mobile lines without porting, while keeping my active line and its plan on a separate account unchanged.

Since October 26, repeated live-chat attempts have failed with “Unable to start a live chat session.” I also texted 888-936-4968 and have received no reply.

Please open an Xfinity Mobile escalation ticket and arrange assistance through forum DM or email rather than a phone call. Please also review charges incurred during this delay and provide written cancellation confirmation, the effective date, and final charges.

I can provide account details privately when requested by an official employee.