Worst Service Agent at Mercedes

Our car was booked in December 2022 for a service and change of shocks. When I collected in January 2023 I was told that the car had been serviced but I need to wait for the shocks . Took the car back to fit the shocks and then told that the service was not done “completely” as the car was not due .Service warning light came on January . Now I get a quote for R13k to do the service. Worst service agent I ever dealt with . Never going back there