My plan description says $40/month but my bill was $91

Dear xfinity team,

On my latest bill, I was charged $91 for my monthly service. This charge is significantly higher than
the $40 per month rate that is listed on my plan overview page.

I've attached a screenshot below of what I mean. You can see that the plan overview pages clearly states 40 dollars a month, even though the bill was 91.

Here is an image of the screenshot:



I did call the xfinity billing team for help, and the agent I spoke to said that my plan had changed "on the backend". I asked why this price change was not in my plan description, and agent just said that this was the new price.

I do feel that since my plan is still being listed now at the price of $40/month, that comcast should be sticking with the price that is displayed as my plan. As long as my plan description says $40/month, I think that that is what I should be charge.

I would very much appreciate any help in resolving this matter. Thank you very much!