Refusal to accept a return

<p>Truworths in Tygervalley Centre, refused to take an item back, because I did not have the slip anymore. The garment is brand new, with the tag still on. The cashier, and later the supervisor refused point blank to take the garment back. I explained that I understand that they can not refund me, but surely they can give me a voucher. He told me, with a very nasty attidute that he does not make the Truworths rules. </p> <p>Is this not against the law?</p> <p> </p>