This happened to me as well.. I never asked for this service, nor has my plan increased at all.
I just spoke with customer support and it appears whoever Comcast has making sales calls is using incredibly misleading tactics. I recieved a call saying they could keep my current internet speed and lower the price. Apparently what they failed to tell me is that they actually switched me to a cheaper service package, then added a "performance upgrade." Both of these were seperate charges, and when the yearly 'discount' went away, we recieved price increases on both our internet package and the "performance upgrade", resulting in a $15 additional charge.
Just another example of shady business practices. Comcast has a literal monopoly on broadband in my area and I have no other options for high speed internet.
Hi r1ty. I can help review your service promotions and discounts, and ensure we are getting you the best offer available. Please reach out to me via private message and include your full name, service address, and account number so I can assist you.