Ripoff - Signed up for the 300Mb $50/mo plan and the bill shows up as $85/mo.

I signed up for and received a receipt for the "300 Mbps Unlimited with WiFi equipment included for 24 months $50/mo For 24 months. No term contract. Taxes not included." The receipt said $50 but the online bill said $85. They had added several items including a Broadcast TV charge for $20+ per month. I called in and said all I needed was the internet and was fine with any of the $0.00/mo extras. They said we don't have such and offer, that plan is $65. I told them it was being offered online right now. They told me I was wrong. They would not even go look at it. I had to cancel the service and return all the hardware. A person at an Xfinity store said someone added all the extras and if I wanted to sign back up they would try to do it right. No guarantee they would not continue to try to add additional charges. The store rep thought it was $25 for something to cap from going over the plan. It is an unlimited plan. If that was the case I would go with the 1200Mbps plan wish would be cheaper. These business practices come across as very unethical. I have AT&T checking now to see if they can service the address. AT&T is $55/mo with a $200 gift card for signing up. I would like to know why Xfinity is doing this, I was fine with the $50 plus tax per month.