Pathetic service ever

I bought a water pump and golf radiator bottle at golfwagen (randpark ridge branch) on the 3rd September 2021,my technician fitted both parts on my which is a 2005 vw golf 5 1,6.after fitting the parts we realised that the radiator bottle is leaking from the plug.we then removed the bottle and took it back to the branch where bought it.This is a manufacturers fault and I just bought 3 hours ago.i ask them exchange the bottle for me as this one is faulty .I argued with Schalk going backwards and forward to his manager .He finally came out to meet me.i explained my problem to him , firstly he did not even introduce himself to me and that is the sign of being rude and being without manners.he then said to me his solution to my problem was that I must buy another bottle and wait 7 days for his office to process a claim.common sense would you a bag full of rotten potatoes in a shop and be told that buy another one whilst we take your claim to head office.you must be dum to do that.i think the manager who is Johannes Landman must go for diversity training and must be taught customer service.the is my first pathetic service with Golfwagen,u have used other branches before ,mooi street ,kliptown, Roodepoort,and many more.any company would have replaced my bottle as I just bought it 3 hours ago .I would have understood if the part was used for more a day I have seen people being changed parts in all of your branches.same day maybe this manager is taking an advantage because I am black.when I bought that bottle Schalk confirm that the bottle has one year guarantee ,why are you using a method of a warranty on a new part ?I sold vehicle for fifteen years vw and Audi ,I know the difference of guarantee and warranty.guys service has no colour and money as well has no colour.dont judge us by the colour of our skin