Fuzzy Math Involving Trade In Phone Credits & Mysterious 3rd Party "The Signal"

Fuzzy Math Involving Trade-In

I gave "The Signal" (3rd Party purchaser in contract look it up) my trade in iphone 12 to receive $800 Credit Towards iphone 13 with price of $800. So we are suckered into being told "The Signal" provide the credit on behalf of T-Mobile in 30 Month Installment Plan @ $26.67/Month.

So this is the reality… "The Signal" has received $800 in trade in value for my iphone 12 making me -$800. I also have to pay $26.67/month EIP for 30 months making me -$800. So I am at a loss of -$1600. However I receive a iphone 13 valued at $800 which I receive a $26.67 credit  for 30 months. 

Therefore REALITY says I no longer have my old iphone 12 which is a $800 CREDIT LOSS.  I am paying $26.67/month for 30 months on new iphone 13 = $800 FRN LOSS. While a $26.67/month credit is being applied to my bill for 30 months = $800 CREDIT WIN.

T-MOBILE STOP LYING TO ME SAYING MY CREDIT IS BALANCING OUT MY PAYMENT EVERY MONTH FOR $0.00 THATS A LIE. 

The Signal has my old phone valued @ $800

Im paying $26.67/month to T-Mobiel = $800 after 30 months

Where is my $26.67/month credit going = $800 after 30 months? Ta Da T-Mobile receives it.

So T-MOBILE GETS PAID 2X/MONTH BY ME TRADING IN MY PAID OFF IPHONE 12. They receive the $26.67 credit monthly along with my $26.67 monthly payment. THEY ARE STRAIGHT DOUBLE DIPPING! THEN WANNA LIE TO ME ON THE PHONE AND TELL ME IM WRONG! BECAUSE THE $26.67 MONTHLY CREDIT RECIPIENT IS TMOBILE NOT MY BANK ACCOUNT. WHILE MY BANK ACCOUNT IS ALSO SENDING $26.67/MONTH TO RECIPIENT T-MOBILE. 

IM NEVER TRADING IN AGAIN…. WHO THE HELL IS THE 3RD PARTY COMPANY "THE SIGNAL" THEY BANKING TOO...