Poorly trained supervisors

I have been dealing with Xfinity billing and their staff for months. I am so tired of the lies and incompetent, poorly trained staff followed by the condescending supervisors who have no clue about customer service. When I called a supervisor out on not listening and I said if she was a supervisor dealing with customers she could use some more training in customer service, she was not being recorded because she had technical difficulties so she told me to " just do me" this is the supervisors pool at Xfininty.