Recently I changed my autopay payment method from a debit card to a bank account. In the past when using autopay I received the full $10/line discount even if there was a credit balance on my account. Now I am only receiving a $5/line discount when there is a credit balance on my account. The credit balance happens if I pay the bill early because of budgeting reasons.
My question is why/when did the autopay policy change so you don't get the full autopay discount if you have a credit balance and AT&T didn't have to pull an auto payment?