Promised a free Xfinity mobile line for 12 months with Xfinity Internet, but keep getting charged and agents can't help me.

I signed up for an XFINITY promotion that stated if I have an internet plan of 300 Mbps or higher, I would qualify for 12 months of free XFINITY Mobile service. My internet plan exceeds 300 Mbps, so I took the offer and even purchased a new phone through XFINITY Mobile. However, my first bill now shows a charge of $65, when I was told it should only be $25 for activation.

I contacted an XFINITY agent via chat, who assured me the issue was fixed, but the incorrect charge remains. I need this resolved before I am billed $65 instead of the promised amount. Please review my account and ensure the promotional offer is correctly applied.

Thank you.