File a Formal complaint??

20 days with intermittent or no internet service. 4 separate tech visits which all left without resolving the issue or referring to line techs as was needed. Almost 13hrs total on the phone with God knows where and not a single answer or help.   Issue still not properly resolved. 

  Worst part is I worked as a line tech for Cablevision for 6 years and already tested and saw where the issue is. After numerous days of a continuous ping text to an Xfinity server I can watch and see as the request times out .  Than the constant packet loss. The modem stays locked but looses internet. This all started a day after the main Node for my neighborhood was replaced . Sadly ive been a customer for over 13 years and this is the nonsense i get.

 Now I try to call and file a formal complaint and noone will allow that to be done , everyone thinks they can help but will not allow a formal notice of complaint, but they just sent me a text saying my bill is due in 7 days, good luck