Unresolved billing issue caused by Xfinity Mobile sales setting two new phone lines up to earn a promo without telling me

I have an unresolved Xfinity Mobile billing dispute that has been ongoing for several months. I've contacted customer service numerous times, and during my last conversation, I was informed that my case was being escalated to leadership.

Unfortunately, nobody from the escalation or leadership team has contacted me, and every time I call, I'm required to explain the entire situation again.

I'm requesting that an escalation specialist or manager take ownership of my existing case, review the prior documentation, and contact me directly to resolve this matter.

Please provide an escalation case number, the department responsible, and a timeframe for a response.