Unhappy customer

Good morning

Earlier this year on the 12 March 2025 I took my car to Mercedes Benz New Vaal Motors Vereeniging for a service. They serviced the car but after a few months the car showed engine light on the dashboard. I then took it back to the same dealership to have it repaired, But they said it was due for another service.

They serviced the car again on the 02 October 2025 but after a few days the engine light re appeared and the car was losing power. I took it back to Mercedes Benz New Vaal Motors Vereeniging, but I was told that they cannot say exactly what's wrong because according to their diagnostic machine it's not showing anything.