Customer Service is Horrible ..

I was trying to get internet service through Xfinity.  A door to door sales man came to my home here in Orlando, FL.  The sales man stated that I will have 1G of internet that will be $50 with autopay or $60 without autopay.  I agreed to the terms and then paid $25 to have the service connected.  My installation date was 10/21/2026, but on Monday I received an email stating my bill was due on November 9th for $80 and some change.  I called to speak with customer service and advise them of this.  The representative was not paying attention to what I was saying and kept offering me a lower internet speed for the same price of $70.  I advised him that was not what I ordered or requested and how am I getting a bill for a service that is not even started or activated yet.  I advised him twice and he kept offering me something that I did not ask for.  I then asked to cancel my service to due him not paying attention to me as the customer.  The representative then started stating that I was not listening to him and I would not let him speak.  I immediately asked for a supervisor because I wanted them to listen to that recorded phone call.  The representative was completely wrong and he would not let me speak to a supervisor or manager.  The representative was not attentive, nor was he a individual that needs to be working for any company that he can not provide etiquette customer service experience.  This is how you treat your customers or even new customers will cause your customers to switch elsewhere.