make a complaint

I have been on the phone 5+ times with Tech support. They said I had a box problem. This is a box I have in my office no my DVR box. I was getting a message on my TV from I believe was the box Sn [Edited: "Personal Information"] which is a smaller box in my office. With this box it allowed me to use voice, pause, and record to my DVR. I started getting a message from what I figured was the box "Instant Replay Card Removed To pause or rewind live insert card" After 4 calls they said they would send me a new box. What shows up is a box that is a DVR. The 5th call said that it should work. Plugged it in and it sat on BOOT for and hour before I disconnected it. They were running a test and said they would call me back but didn't. I did ask if having 2 DVR's was a problem and they said no. Also was I going to be charged for a second DVR came to my mind. When the 2nd DVR just stayed on BOOT I called a 6th time. Was told I could get a call back in 10 to 20 min. No call back. Called a 7th time and go disconnected 2 times. I am going to take the box to an xfinity store and return the DVR and get a new box for my office.  Xfinity gives no breaks to seniors on a fixed income when the TV is most important at that age for enterainment. Now you can't even get phone support you can trust or you need to pay for a serviceman to come to your home. Paying for a serviceman to come to your home is just greedy when you spend over $250 a month for service.