Paying for S21 ( R1,066) gets decline for a S24 (R 749)

I have app**** for a Samsung S24 the price is R 749. I did the application online, where I can give them credit is that they where fast with the application which was nice for once. They reverted back to me saying application was approved under conditions basically not qualifying for the self phone which is funny. Because I can afford it - I currently have a Samsung S21 red-line the payment is R 1,066 each month. They can see on my bank statements that I am paying my account. I've sent out emails asking questions. I've sent an email to the online application department and no prevail, I have called the number, I was given just with lovely a surprise that the phone number doesn't even go to a person that can assist me... the more beautiful thing is that CEO's office din't even reply to my email.