Paid item never delivered

I bought a pair of pants (Nova) online from World Of Accessories. They called me and stated that they do not have my size available, but will send me an alternative. I was not happy with this, but did accept this as it was still a good deal. <br> <br> I received the pants and it was a size too small. I then spoke to Grant en couriered it back to the Randburg office and sent an email. This was done on 17 August 2015. <br> <br> I still have not received any feedback, after speaking to Grant on the phone where he confirmed he did receive my package and was waiting for the supplier. (around 25 August)<br> <br> No I find out that they have closed from various sources, and no one is answering the phones at head office.<br> <br> Where can I get hold of someone to pay back my money or send me the item I purchased and paid for. EXTREMELY BAD SERVICE AND EMPTY PROMISES!