Seriously RipPing us off- ****ED OFF

can you please explain why my initial car finance debt is R364 000 and i have been paying installments of R6800 pm since march. now i want to settle account, BOOOM!!! My settlement amount is R371 000????? how come standard bank? why are you charging me interest of months to come whereas i want to settle my debt NOOOOW....???? PLEASE REVIEW THIS. I WAN TO PAYOFF MY CAR NOW AND THERE IS NOWAY MY DEBT WILL BE MORE THAN MY INITIAL DEBT AFTER PAYING FOR 5 MONTHS.