7 Hours on the Phone with "Support," Closed Tickets, and No Resolutions

I've called numerous times since March 12th, 2025 to have a business bill error corrected according to the language in our contract. First-level supervisors stick to their call flows and have no tangible means of correcting the actual issue. Further, I have had several instances of being cold transferred to departments that have no idea how to help, one call that a representative was extremely unprofessional (dismissed concerns, transferred cold to a voicemail box that was full—and this after being on the phone for 2+ hours). 

I've asked for 2nd level supervisors, and [surprise] none are ever available and the 1st level supervisors are the "highest" we can speak to. 

To make matters worse, I've had 7 support tickets related to our matter AND customer complaints because of the severe lack of quality customer service that are already closed. No phone call back. No update. No correspondence. Only another incorrect invoice. Really?

If we do not hear from a senior supervisor through corporate offices or customer complaints/retention departments, we will contest our previous charges. We will also contact the FCC and other pertinent local government offices to file official complaints pertaining to unresolved/dismissed customer concerns and breaches of contract.