Damaged item bought

If I was able to give half a star I would, I have really been disappointed by the one retail store that I value so much and I support so much there is not a single month I don't go to woolworths to but something. On January 7th I went to woolworths Cavandish I bought a few items and in those items there was a two piece gyming pink attire, that when I got home to fit only to find out it had marks on the tights and those marks which I didn't pick up at the store. Now I was traveling the following morning back to Pretoria I couldn't return the item at Cavandish I then opted to return it back to woolworths Centurion, there I was told that they can't take back the item because it is damaged and I explained to them that I got it like this from the cavandish store it's just that I could not return it there because I had to leave Cape Town. I was then asked 'why I didn't check the item before paying for it' now my question is why would they have a damaged item on their floor and secondly why didn't the cashier 'who was the last person to handle the item' check if it was in condition. I'm now stuck with an item that I have bought and am not able to use because the lady who was at Cavandish store was *********** because she did not do what she was supposed to do. I then got a sense that they think I damaged the item, because they said that they looked at the footage of the day that I bought the item and they are saying that the cashier did check the item before she put it in the bag, though I was never shown that footage. I'm really disappointed with woolworths really.