Billing /Customer Service

I talked with an online agent in January about my promotional contract that expired in December. I was "assured" everything that was in that package would be $194.93, not the original $188.99. Ok not bad, then my next bill comes in January and it's $210.18, paid it because I forgot to go to my local Xfinity store. The next month it is $215.15...??  Go to my local Xfinity store and they said they cannot help me with a billing problem to call the 1 800 #.  The local Xfinity store can only provide services, not help with billing issues.  I call only to get a link on my cell phone to "talk" with an agent. Agent said they have to pull up my conversation, ok I wait and was told I would get a $20 credit, ok and I said that will be fine.. but I am to be paying $194.93 a month. After agent talks to a supervisor I talk to a supervisor and this goes on for over an hour, I am back to where I started with a one time $20 credit. I was told there was no order change which there was not ,I kept the plan I had an was ASSURED by an agent it would not go up, I took pictures of my conversations and was told they cannot receive them only texts. So now I either cancel, change or keep my plan and pay more than what I was quoted by an agent. So after being "assured" by an agent.. that did not really do their job I pay more. I have been a cable customer for over 30 years...I am not tech savvy and only 60...what if I didn't have a cell phone?  How are people who do not have a cell phone or computer able to get "real" customer service.  I think you need to have alternative ways for others to get the help they need by being able to see and hear a people to help with theirs issues, either by phone and definitely someone at a local Xfinity store. I know times change but customer service should be a priority not just talking our money and not giving the consumer the help we need. This is Senior Discrimination and I think your way of dealing with our needs are not being met.