Att&T U-Verse Billing issues

I bundled my Att & Direct TV services back in August 2016 after calling to cancel my home phone which i never used They also threw in Wireless internet for $89.00 a month plus tax & fees worst thing i ever did!

ATT Uverse and Direct TV came in separate vehicles the following week to install . After an hour my Direct TV quit working, Sent me a new cord the following week, didn't work. . Finally sent another Direct TV man out he stated the boxes they installed in my home belonged to another customer!

He replaced the 2 Boxes.  I winded up with several D- TV accounts and service was never bundled.  I started getting 2 bills a lot higher than quoted.

Problem now in 2017 ive been on the phone every month as i mail a check to ATT for services but payments are not applied to my account my checks are being converted to ACH or Debits from my checking account each  month but no payments are being applied! .  After many attempts I called my bank got proof of payments, sent to billing at ATT per their request, they still have no idea where my $$ is being applied. Customer service sends me to 6 people during the process & then hangs up on me i have to start over again... its very frustrating.

As of today 6/22/2017 calls to check on act status, and several work orders this month  trying to get this issue resolved. Nothing. Its my understating from my bank they are required by law to keep a copy of my checks! Customer services, Billing, Collections,  has no idea .

Anyone know how i can get this resolved ?