Worst service ever - Bosch Braamfontein

I took my car to a braamfontein branch as the engine and traction lights were on, initially they changed petrol pump but the issue persisted and they I had to take it back and this time they changed a number of things.

The manager called me the 18th Jan 2019 to come collect the car as it is "ready", however when I got there, the car still had the same issues which were initially reported and the engine light was still on.

These guys wanted me to sign an invoice of around R20k FOR SOMETHING THAT IS STILL IN THE SAME CONDITION.

Furthermore when I took my car there for service before all issues came up, they broke my car keys, they have admitted fault but are not willing to commit on when I can get my keys replaced.