Failed Customer Service

I called yesterday morning regarding a 250%+ increase in my bill. The representative tried to sell me a new package at the same price. I asked to speak to a manager, to which the representative replied "Why would you want to speak to a supervisor? They can't do anything I can't do." After arguing with me for a little longer she told me that a manager was unavailable but they would call me back THAT DAY. We're over 24 hours since then and no callback attempt was made. Incredibly disappointed in just about everything