Worst experience ever

Good day. I have been fighting with MFC since day one of getting my Vehicle and no one can give me straight answers i first purchased a Suzuki swift but because of problems i traded the vehicle for a Hyundai Creta not even 12 hours later a phone them and the dealership saying i want to cancel the deal and get the swift back as my current financial situation would most likely change as i got a call early in the morning stating i would get a salary cut okay after numerous calls they said the dealership has to cancel and the dealership does not want to as they clam at 8pm the previous night they already settled the Suzuki which was a complete lie the Suzuki was only settled a few days after okay fast forward the dealership should have cancelled the deal on the Creta and put me into a cheaper car but to my surprise i found out they to the Creta as a trade in but MFC approved me on a I10 grand on a 9.27% intrest rate at R5000 pm i owe them almost half a million rand for a damn Hyundai Grand I10 not one dealership understands how they have approved this vehicle and deal after i tried to trade the vehicle because i do not like the I10 that i was forced into and it was also problematic not even MFC can say how tjey have approved it i am now basically married ta a vehicle that i can not come out of.