Once again billed incorrectly URGENT RESPONSE REQUIRED!

This is the email I sent today regarding my incorrect billing.  I expect a call from a manager, director or above.  How can a communcations company be so HORRIBLE at internal communication.  At this point, I wouldn't trust you with 2 tin cans and a string!

"Matt, 
Since our last conversation on 1/5/15 confirming the issues I've been having and you confirmed my internet rate of $19.95 for 12 mos IT IS STILL NOT BILLING CORRECTLY.  I received a confirmation letter #119201364 dated 12/19/2014 stating my high speed internet elite plan would be $24.50 for six months.  I then received another confirmation letter #119293785 dated 1/5/2015 stating that my internet high speed elite service would be $19.95 per month for 12 months.  Well, I opened my today to see that I AM BEING BILLED $49.00!  WHAT IS WRONG WITH YOU PEOPLE!  YOU SEND LETTERS CONFIRMING SERVICES THEN CHARGE A COMPLETELY DIFFERENT AMOUNT......AGAIN!  I want this latest issue resolved IMMEDIATELY!  I will be following up via the website and by phone.  This time I WANT A DIRECTOR OR V.P. AS I HAVE LOST COMPLETE FAITH IN ANYONE WHO IS BELOW THAT.  I have had countless dealings with you people and NO ONE IN YOU COMPANY KNOWS HOW TO COMMUNICATE INTERNALLY.  Pretty sad for a "communications" company.  I don't know what your hiring process is but you need to change it and your training.  I've seen fast food workers with better customer service skills than the people at AT&T who are, per you , supposedly trained to the highest degree of service.  MALARKEY!  The actions of your company are in NO WAY ALIGNED WITH YOUR PROMISES OF SUPERIOR SERVICE.