Poor quality from Opel SA - products & after sales service

We bought a Opel Mokka X Cosmo (1.4T) in 2017. On 01 June 2021 we took the Mokka to Westvaal Motor Holdings in Menlyn to replace all four wheels brake pads. In January 2022 we took the Mokka in for it's last 'under warranty' service, to the George authorised service dealership. The km reading was just below 54000km after 5 years. They were great by identifying two major issues, i.e. water pump had to be replaced as well as the turbo. We also had a problem with the rear brakes. The dealership's assessment was that the brake pads were installed wrongly. After several efforts to give feedback to Opel SA, it came to nothing. Here are my concerns regarding Opel SA: 1) Poor quality products - Water pump & turbo to become defective after only 54 000 km is a reflection on poor engineering efforts. 2) Had to wait two months for spare parts - in my opinion this is poor after sales service. 3) An authorised service dealership that does not know how to fit brakepads correctly, is very concerning. 4) Opel SA that does not really have a feedback mechanism is also concerning - their system transfers the issue always to a dealership. My concern was not against the dealership, but the poor quality regarding their products and their after sales services. Message to the public - be careful before buying Opel products!