Refusal to return a good that was damaged already

My mom bought me a clutch bag that was supposed to match my shoe at a Forever New outlet and was on sale and was the last one, she further received a 10% discount because the goods were damaged with pen mark and price tag was oldish. It so happened that the bag was a different shade to the shoe and I disliked the bag.2 weeks later I returned the bag but the store manager rudely refused the return because of the tag that shifted on the hook(got it loose in first place), my mother bought it that way on the sale and talked about a 10 day policy and that the head office won't want it. I told I do not like the bag and I need to return it, as a customer I should be happy with my purchase. With attitude she said that she will call me today but she assures me that Forever new head office wont take the bag, still waiting for the call even now!.