Xfinity Indoor Camera Failure and awful customer service

I purchased 2 Xfinity indoor cameras last year and at first they worked great. Then I moved and connected the cameras. After a month the cameras disconnected from the internet and I was unable to reconnect them after going through hours of help with the Xfinity assistant and customer service. I was finally so fed up I drove into the local store to have the cameras replaced. Only to have the staff turn me away and say they were unable to help me(Xfinity store on Jonestown road in Harrisburg, Pa). I then had to call in and spent 2 and a half hours be transferred from one service to the next because no one had the authority to replace my cameras that are under warranty. After sitting on hold for the final 30 minutes I had to ask the agent to call me the next day because I have to go to bed so I can work in the morning. This was the worst customer support service of my life. In the middle of all the run around one agent tried to sell me a cell phone plan. I respectfully declined because I will never be able to get support if I have issues. If this is not resolved soon I will be dropping Comcast and switching to Verizon.