I feel cheated - Xfinity just adding extra services promising a lower bill but my bill keeps increasing after every conversation with them.

Hi,

I just need help in dealing with a situation here with Xfinity. My Xfinity internet service was being charged $80 for a 1000Gbps internet. I got in touch with Xfinity support one day to ask them about peacock premium, in the process the rep told me that she was giving me a special upgrade to 1200Gbps for no additional charge since I have been with Xfinity for a long time. I did accept the offer after making sure THERE WILL BE NO ADDITIONAL CHARGE. But the next month, my bill went up to $95. I get in touch with support and tell them about this, their response - "Our support agent made a mistake and promised something we can't honor". They went through previous chats with support and confirmed that I was indeed telling them the truth. Now, since they can't rectify and put me back on the 1000Gbps plan at $80 anymore, they promise me another plan where if I got a new mobile line, then they would be able to add discounts and my plan will be in fact reduced to $75 a month for 1000Gbps internet and a phone line through Xfinity. The next month, I get a bill for $113! How ridiculous is this? Now, I contact support again and they tell me I will see a $30 discount every month on my internet service and the change will be reflected in 24-48 hours. It's been 4 days and I still don't see a change in my bill. I contacted support again today and they said my monthly bill will be $113 moving forward and they can't do anything about it. I have lost hope and I feel this is so unfair to me as a customer. I've spent hours chatting with support, only in vain. Can I sue Xfinity or something? Any help here is greatly appreciated. Please see screenshots attached.

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