Label and size wrong, poor workman's products

I've bought underwear at one supplier of Jockey, the label shows medium. When I try to wear it, the underwear were so tide, I couldn't wear it. I've got small and medium, both sizes fits me. The other day I bought at Jockey them self, the product looks fine in store. When I inspect it at home again, I found the seam wasn't stitched properly. The store policy state that you not allowed to return underwear due to hygiene reasons, that means you lose money each time the product is wrongly manufacture. I try to support South Africa, but this is what you receive from South Africa manufacturers. I'll rather by something from China, because all the products are from China. Check the label. MADE IN CHINA.