FAW Sirius S80 corrosion and lack of feedback

On purchase of my new FAW Sirius S80 Panel Van in October 2014 I had problems with delivery, corroded roof racks, ignition, door handles and 90% of all the bolts on the car. The salesman promised me that the problem will be sorted in no time. Photos were taken on numerous times of the corrosion and empty promises were always made. A year later and still not sorted! In the meantime the car already went for services where I reminded the service consultants, including the service manager of the problem. They all promised to get back to me. When? I also experienced a problem with the petrol cap flap. The cable that releases the flap keeps on dislocating. I had the car back there on 3 occasions. The mechanic also forgot to put the oil cap back on after the first service. I drove almost 1000km without a oil cap! With the last service, I asked them to have a look at the brakes. Theres a major shudder when I brake. They gave me a lame excuse as to why theres a shudder. I am very disappointed. I feel cheated and unsafe. What was supposed to be my \brand new car"became my biggest embarrasment! """