Service advisor refused to service car and wanted more money

We received a quote of R3933.27 to service our car on Saturday the 8th of Feb, everything was confirmed and booked but when we took the car in on Saturdays the service advisor refused to do the service and said we must pay R6000 for the service as we where quoted incorrect. We dont have the name of the service advisor it was an Indian lady. Is this the type of service Suzuki runs for their clients giving them the run around, the fact that I have a written quote emailed to me and they refused to honor it, this is absolutely ridiculous, I want the manager to call me.