Ripping people off with their sale items

Bought a jean that was on special online, delivered to the store on the 29th of August, I went to collect it in store on 30th of August. Fitted it on the 1st of Septemeber, it did not fit well, therefore on the same day I went in store to return, I was told the jeans is not in the same condition.....So the truworths that the product was purhased gave me a product that is in a poor condition, I guess that is why it was on sale in the first place!!!! Now I cannot get a refund. Will be closing my account. Dont buy clothing thats on sale from Truworths with delivery....It's a *******!!! so disappointed...