unfair scrupulous ****msters

I went through Rentoza to get a phone which i cannot complain they are good but my subscription ended 11/24 and i paid R950 per month for a samsung s21fe 128gb. Value currently new is R4799 from Samsungs so i have paid from 11/23 till 02/25 a total of R15200 . when i asked about the phone they still want me to another R1999.00 to get ownership of the phone which is day light ******* i have paid more than the value back surely why must i pay extra