Xfinity mobile plan for a year free was a scam and lie

I am writing to express my extreme disappointment and frustration regarding an unauthorized charge for Xfinity Mobile Unlimited service on my account. On Oct 4, I switch my Internet service to a new plan and there was a promotion in green on the website saying that

"Get a line of Xfinity Mobile Unlimited included for 1 year." I comfirmed the promotion with the Live Advisor named Alex and he helped me add a new line that as he said would be free for a year, and after 1 year would be $40.

However, after the first month, I have been received a bill for $75.11 for this service, despite the promotional offer.

° xfinity.com/digital/offers,

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