Very bad service

Very bad service, started doing finance and when the numbers did not add up and I asked for a detailed explanation, they increased the vechiles price with R20 000 and said they advertised it wrong, the sales person said I would pay the price I saw the car advertised for but the next day told me if I don't the R20 000 more there is nothing they can do. I would suggest to stay away from this dealership, they get your hopes up and then increase the price of the vechile you app**** for by R20 000