Constant pixilations

I have been a Comcast customer for over 30 years. I have triple play. Every day I turn on the TV I have pixels on multiple channels. I have refreshed and restarted on the TV hundreds of times we have had your service men come in our house and check the line. Nothing was wrong inside the house. We have exchanged boxes several times and continue to have the problem with the pixels we have had a recent service man come and check the box outside. He said nothing was wrong at the box, but we continued to have multiple channel pixels. The service man said it’s an area problem. What I want is your service man to come replace the underground cable that leads to our house and hope that that will resolve our problem. We are paying you a lot of money for poor service. If you cannot confirm that new cable will be put underground then we will be looking at another supplier frustration ration frustration.