Wrong order delivered

We went to Rochester to buy a lounge suite and paid quite a load of cash. It gets delivered and is not what we ordered. Now they reckon we must pay a R1000 extra to rectify their mistake. HOW does this company think this is okay?? Yes it was a special they had that is now over BUT surely this isn't my error and surely I should get what I paid for?? We have now asked for a full refund but that is going to take time. <br> I cannot find a head office telephone number because the store manager obviously doesn't make these decisions without the head office knowing what is going on!!!!!