Kendra Scott review: leanor bar pendant necklace in platinum drusy

Within a mere 2 months, the entire necklace, including the pendant, rusted. The chain and the prongs/holder of the stone is all a red rusted color. I don't shower, workout, or do any other activity in this piece of jewelry, as the card in the box says. I am extremely displeased and would like my money back. This is the second time this happened with this necklace!