Purchase motor vehicle

I purchased a rent to own vehicle at Planet 42, a Toyota Corolla 1997 model that was in November 2022,they don't give me a fixed amount that I must pay for the vehicle they just give me a Monthly installment of R5359 and I give a R5000 deposit and I must pay for Five(5)years,I am under dept review and they help blacklisted and dept review people,but I want to know I currently pay the amount of R230,431 on this vehicle and I must still pay untill 2027 is it ligit or correct according to the consumer act of the motor industry what planet42 do because in 2027 I will pay already over R300000 for a 1997 Toyota Corolla.