NOT A HAPPY CAMPER!!!

oooooh xfinity I have just about had it with your service representatives that are from out of the country. Why is it that EVERY time I try to accomplish it gets [Edited: "Language"] up by them? I get that it may be cheaper to out source the help but if its at a cost to your customers service maybe you should rethink this. I recently received an email about getting free cell service for a year and contacted you about it. I told the rep that I had the service already but was wondering if I could still qualify. He said he couldn't do anything but to let him speak to his supervisor. He then came back and stated "good news!"  that I can qualify but I would have to change my line from "by the gig" to the unlimited. I said ok as long as it will be free that is fine. He also gave me a $20 credit on my current bill to start me off with no bills for a year and thought I was set up and ready to go. Welllllll that is not what happened. Not only did the agent not record the chat there was NO changes made nor anything put in to make the change.  Then I spoke to your Supervisor LEO and he basically said so sorry nothing we can do here's another $20 credit for the month.  That is how you handle a customer being wronged? I asked MULTIPLE times for someone to check the chat and no one can see anything. How is it someone can be on chat for 45 mins with someone and there is no record except the credit. And you can't tell me WHO applied it? this is how you treat LONG time customers?   NOT HAPPY XFINITY!!!!!