Products are watered down and diluted. Not quality

Worst service ever. VA Waterfront in Cape Town is disgraceful. Purchased products that is suppose to last up to 90 days according to the sales person. It's now just over a week and it's finished. The produced are clearly watered down! Will not show support again. Went back to the store and was told it's not their problem and that they refuse to exchange or refund. Disgraceful!