Not helpful with Factory defect

Bought a mirror with a factory defect. I was told that I took too long to let them know n they won't exchange it or refund me. Then the further said the mirror is supposed to be like that. The trim of the mirror has a gap and I am not happy with that. Before sending them an email I went to the store to try and return it and they refused to take it. They said the return should be done online cos that's where it was bought