Bosch service center

I took my vehicle to Bosch service center in Mokopane to be fixed after a engine warning light showed up, they told me that it was the turbo valve. After replacing it the light showed up again after about 3 days and vehicle was losing power. I took it back and the manger told me that I need to replace the Clutch switch, the throttle body and the VVT. I told the manager that the vehicle was a comeback and he said that it's not a comeback because in his words "the faults were hiding from us in the dynamic test".

I reached out to Bosch South Africa with the issue, I received an email with a case number and the promise to be contacted, after two weeks I did a follow up and I still had any feedback.

This is very disappointing from Bosch Mokopane and Bosch South Africa.