Adjustment of billing charges

I have a fixed retirement income and can no longer afford the costs associated with Xfinity.  I have gone twice to local Xfinity Store to try a few adjustments.  Competitors offer similar products at less expense.  I am now prepared to discontinue TV thru Xfinity as I can stream a plan that encompasses over the 135+ channels I currently have with Xfinity at half the price of Xfinity.  Their offer includes complete sports channels so I wouldn’t have that expense in addition.  I don’t know if you can match that offering.  If so I can remain a customer. I will understand if you cannot.