Billing issues, poor service and basic operations [Edited]

I am extreamly upset.  I have spent 1 week, over 5 hours, and 6 agents to get the following issues fixed.  I have never been more upset or had a worse experience with any company.  I had a contract that had a loyalty discount for 11 monts.  it started in september and then with no notification or reason ended in april (which is not 11 months).  I reached out to support and they kept ignoring the issue that there was a breach of contract.  They did get me setup with a diffrent service and promissed a prorated rate.  I was satified with that as what needed to be done more than anything was the billing to be corrected.  The billing has yet to be corrected.  I do have documentation of both the promis of a prorated rate for may as well as proof of the breach of contract.  I have reached out several more times asking for the may bill to be fixed.  I use the service for work and need to submit expenses.  I have asked for tickets to be esclated and the agents promised that someone would contact me either via email or phone call.  not only has that not happend but the tickets keep getting closed without any action done. as the bill has not been fixed (and until i see it reflected on the account there is no way i can trust a company to do what they say when there has been constant proof of not following through).  So now I am upset about the early discinuation of the contracted discount. the fraud on my may bill and the entire treatment of the customer service process.  I expect to be contacted via email, your company can nolonger be trusted to do anything with out written proof, and even then that seems to be an issue.  I expect the May bill to be fixed with it reflected in my account, I expect compensation (you may provide options) for the early unaproved discinuation of the contracted discount, the constant disregard of my requests to be contacted, esclated tickets, and [Edited: "Profanity"] poor service.  I am happy to provide the documentation to back my claims.  If I do not get an email addressing ALL three issues I will esclate it my self to the State, BBB, as well as recomend our company cease using Xfinity for our work compleatly as you are unable to do basic billing and customer service.