Disgusting service and lack of accountability

I bought a generator (ryobi 2500w) from makro Woodmead on 9/12/2019 as backup for my ba*****t pumps during load shedding and heavy rains. I stressed the importance to the salesman, who supp**** me with one off the floor. Took it home and realized it was a returned item that had oil stains inside box, no manual or accessories, and remnants of oil in the generator itself. Worse still, it did not work. It rained heavily that night during load shedding, and my ba*****t got flooded. Myself and my family were clearing water and cleaning up from midnight (when electricity resumed) till 2am. Needless to say, I was furious. Went back to makro 9:30 on 10/12/2019 to replace it for a working one (since load shedding was starting at midday) and get some sort of compensation. What I received was a lack of empathy and accountability. The manager Sifiso, refused to accept it was a second hand, broken unit, constantly shifting blame to supplier. My understanding is that makro sells only reputable items and take responsibility in situations like this. There was no stock so he brought the floor unit, which also didn’t work. (On a side note, after this experience I have serious misgivings about ryobi generators) At 11:00, after wasting 90min, he tells me that all he can do is refund me for the generator. He refuses to loan me a working generator, he refuses to contact game and builders warehouse because they are separate, even though they are all under massmart???? I call for his manager, Kobus, who runs the same script. He gives me a R400 credit note which is only R200 after subtracting my fuel and oil cost, and they make some calls to game and builders. I realize I’m wasting my time, hire a generator from Talisman, and save my ba*****t. I expected better, but will not in the future... Btw, at no point did anyone say sorry.. Good luck Mr Slape, on turning around this train wreck.