How to Report Deceptive Billing Practices by AT&T That Result in Collections That Are Not the Consumer's Fault

I tried for months to get adjusted bills that I was told to expect once I stopped all of my services with AT&T for their deceptive business practices. Since I was a 'legacy' DirecTV customer, NO ONE between AT&T and DirecTV account management was able to provide the final combined Uverse bill. I received a number of credit bills from DirectTV showing a credit on my account. Eventually I received a VISA debit card with my credit paid. However, AT&T UVerse managment failed to finalize closing my account and continued to insist that I owed money and still never provided a closing statement and admitted their failure on handling the bill. I was turned over to a collection agency and was defrauded by them by their claims that I didn't settle with them which I did out of total frustration knowing I was not at fault. AT&T customer service supposedly put in a dispute on my behalf that absolutely did not happen. How is this to be resolved and remove the fraudulent information for my credit report for all of the bureaus. I am working my way through disputing withe each one of them. AT&T SHOULD BE HELP ACCOUNTABLE for this mess. The selection for categories to complete this posting do not cover DirectTV but AT&T owns them!