Comcast wont unlock dual sim card on S24 ultra

I purchased a a S24 ultra through Xfinity specifically for the use of the dual sim card function. I work overseas and need to swap pSIM cards depending on what country I am in. I use a eSIM for Xfinity but Xfinity has my pSIM port locked for use with a second SIM unless I completely pay off the phone. Been a loyal customer, never late on a payment and I other than owning the phone outright I cannot use one of it's basic functions. Xfinity does not warn you that you cannot use dual sim if you make payments. Further still, if I was told that if I pay for the phone outright, which I offered to do, I was told I would lose the discounted promotion I have for the phones because the discount is tied to the payments.... lol fantastic.

Xfinity I am not trying to swap services, I am trying to use the phone for the whole reason I chose this phone for.  Fix this or warn people that you cannot have dual sims with your phones.