Bad service

I bought a kids Zerbit pant which I noticed after my child wore it, I phoned the head office as I already lost my slip and tags to query about it and was told to send it back to the store and give them the date I bought it,they will be able to trace it. I bought it at Southgate mall and now am at Vosloorus and took initiative to call the store and was told I can return it to any other edgars but will take a little bit of time but will be able to exchange it. I asked my neighbor as am in and out with hospital appointments to take it back for me as she works at the mall and they refused to take it without a slip after she explained the story to them that the head office agreed on it. They asked that I should come and am not in a good condition as am not feeling well. It a pity because it not my first time buying a damaged product and choose not to return as I could fix it, am losing my trust to the quality of their clothes.