Unsatisfactory service

Poorest service at its best in wonderboom store, Assistant (Phindile). One would think they don't have customer service workshops. I went to exchange the necklace before mentioning what was wrong with it to the same assistant who sold it to me, she mentioned stones missing in her own words. To me it was either she knew about it and sold it anyway or if she knows they have issues of that nature first thing when she sold such item she must've told me and we do inspection at the point on purchase. Anyways with an attitude she refused to exchange it without proof of purchase. I mean there's store print and purchase was not even 48 hours old. To unsuspecting customers closer to wonderboom American Swiss might think they buying 12ct only to find that it's 11carat m just saying. Damaged goods should be put aside and taken back to suppliers.