Amount quoted less than amount we were charged

We went to the reception at the Lagoon Beach Hotel in Milnerton, Cape Town on the 4th of January 2016 and booked a tour of the Cape Peninsula. At the hotel we were quoted R850 per person which amounted to R4250 for five persons.<br> <br> on the 5th of January 2016 we boarded the vehicle for the tour and at the conclusion of the tour, we were told that the price is R930 per person which amounted to R4650 for five persons.<br> <br> I have issue with this because the brochure we were given at the hotel had the amount of R850 pp and we budgeted for the tour based on this amount.<br> Our tour guide, Robert, called the lady named Maritjie who confirmed that the price of R850 was last year's price and there was an increase this year. But she insisted that we pay the new amount, which resulted in us paying R400 more than what wehad known the trip to cost.