poor of poor services

Opel customer services they never provide assistance, I bought 2017 Ecoflex opel cors November 2017, 27 August 2018 it burnt clutch and I was charged R30 000 for repairs and it took whole four weeks to get it done, after wards (29 September) I was told starter is also burnt, 02 October was told that the car is ready for collection by customer service, when I called on the 3rd because I wanted them to also do service on the car as it is close to 30000 KM, was then told that the starter will be delivered on 9 October, but on that day was then told that there is back log so the starter will be delivered next year, without proper explanation was then told that customer service will call me, unfortunately they never did, I had to call them myself, on the 10th of October was told that yes the starter will arrive next year, and they still could not explain why, and they promise to arrange me a courtesy car, and that the customer service manager will call me for further explanation, which he/she never did, I called on 12 October was told that the request for the car has been done and will get a call before the end of the day, even on the 11th they said same thing they never call, so I don't know whether they do this because I am black person, because if I get poor service from customer service what are my options then? and I regret that I bought opel corsa, that their technician told me it can not tolerate areas with high traffic the clutch will be burnt. OPEL CORSA IS VERY BAD NEWS FOR SOUTH AFRICAN COMMUNITY