Service terrible customer service is worse

I have been a customer for over 40 years!  The company and service used to be spectacular. It is horrendous now. I can't use my TV 3-4 days a month- I have to replace my boxes every every 3 months. Now I can't answer my phone- everytime someone calls I answer and they can't hear me.  I can hear them. The internet is incredibly slow. The only thing that has grown is the bill. Paying 300/mo for garbage service. I have been told many times I would be contacted by customer service. I never receive a follow up