Worst place for service as there is none

I took my brand new ford ranger double cab as it picked up a problem with the park sensor and the bonnet lining a few times and they sent back with same fault . They couldn’t pick it up even after showing photos and videos of the fault . As fir the bonnet lining they refused to fit it as I didn’t purchase the vehicle from them and I gave the salesman the opportunity to match or beat the deal before buying from Klerksdorp. The manager was arrogant enough to give me a letter stating they cannot fix or replace a warranty part and I must take it to the dealership of purchase. Ford bruma is less than 1 km from place off residence. Never went back . Useless arrogant . Why doesn’t ford state you cannot send your vehicle to any dealership once purchased.