Upgraded to S23 with pre-order $1000 credit offer, but only getting $800?

I pre-ordered a Samsung Galaxy S23 in February 2023 trading in my Galaxy S21 for $1000 credit (over 36 months) as part of ATT's pre-order deal. Instead of sending my S21 phone to ATT via USPS mail, I opted to turn in my S21 to my local ATT store and get a receipt. I did this, because last year ATT lost my wife's iPhone trade-in and I've been battling with ATT for the last 5 months trying to get it the trade-in credits.

So, I have a device trade-in receipt from ATT that shows a value of $130 but it says "up to $1000 off Samsung S23 family". The ATT clerk who examined my phone and gave me the receipt told me although it says a value of $130, I would get the full $1000 credit.

To confirm this, I also chatted with ATT online support and specifically asked the question about trading in my S21 and getting the full $1000 credit, even though the S23 phone that I was upgrading to only cost $800. The support person said yes, even though my the S23 was $800 I would still get the full $1000 credit over the next 36 months.

Yesterday I get my first bill from ATT since upgrading to the S23 and I see I'm only getting monthly installment credits reflecting a $800 trade-in, not $1000. I contacted ATT support and their supervisor told me my S23 costs $800 so they are only giving me $800 credit (basically a free phone over 36 months). I explained the whole story and the supervisor told me to call the "Loyalty Care" number and disconnected the chat session. I knew that was an endless avenue to nowhere because of my battles with my wife's iPhone trade-in.

Did anyone upgrade to the S23 with the pre-order and are you getting your full $1000 credit? Did you also trade in an S21 or older model?