Switched from AT&T and bill is a lot more than I was quoted

I have already submitted the final bill to T Mobile. I did that on 06/11/2022. When I placed the order with T Mobile to begin the switch, the person I spoke with, Ebony, was informed that I still owed money on the two phones from AT&T. We even discussed and looked at how much I still owed on these phones. I was told and repeatedly assured that I would receive a Mastercard that can be used to pay off the two phones from AT&T. I was also told my bill would be $180 per month including insurance on three lines. None of these things have been true. I had to call today to add the insurance to two of the lines. I should have been told immediately that AT&T phones still under installment are not eligible for the reimbursement. I was told I could bring the two phones and port the numbers over from AT&T and it wasn't until after I was in the T Mobile store with the new phone that I was told that this can't be done with an AT&T phone until it is unlocked. Now, my bill is going to be around $290 per month and I will still owe AT&T even after I am given credit for the trade ins, because T Mobile won't be paying off the phones entirely. These two phones are I phones 13s that were purchased in January of 2022. I am very unhappy about being misled and I have filed a complaint with the BBB.