bad services and ****

I saw a car polo 2016 advertised on Hyundai website with a price of R139 900.00 I was interested and went there to the dealership and purchase the car via bank , when we where doing papers works 1 was approved by Nedbank and after they have added the interest and everything the amount that I should pay for 72 month was R182 432.64 that was the agreement and the documents i have signed with the dealership, on the 13.08.2020 I received an email with a statement from MFC Nedbank stating that am owing R247.137.12 Which I didn't signed for I called the bank and they told me that the original price for the car is R182 432.64 and they have added their interest of R60.000,

As if that was not enough when i go to collect the car they where rushing me and to go but because this was my first car i didn't know what was going on i thought that how things where done. when i get home the car has lots of tends i called the sales lady she said she doesn't know i have sent emails to the account manager who was helping me the was no respond, until today. and i haven't receive a disk from them until today .