promotional credit never received

Um ... Say again so it makes sense?  

If you receiving bill credits of $19.45 every month it sounds like you are indeed getting the promotional credits.   

Example :  Your installments should say something like "installment number 30 of 36" And your bill credits should say the same thing. 

The total amount of your installment remaining should be equal to this remaining number of bill credits.  In my example 6  installments should be the remaining balance of your phone.  

Do you know how to click on the plus signs to expand certain sections of your bill so you can read all of the fine details?  

this new site design says I have been receiving bill credits for this device, but none of the actual bills show a credit of any kind. yes it's confusing. and its probably my fault for signing up for autopay and not checking my bill earlier

Autopay is not an excuse for not looking at your bills.