In Richard's Bay I bought a perfume Prada Paradoxe, I returned it because it seemed diluted

In Richard's Bay I bought a perfume Prada Paradoxe, I returned it because it seemed diluted. Then bought Chanel Chance edp only for it to be the same. I returned it and they took it for testing, they said. The feedback I got was that it smells the same as other perfumes. I bought the perfume after testing it for a couple of times and my friend who has it said it lasts long and she get compliments. Mine you can't smell it. I'm so hurt, my R3750 down the drain.