Making excuses for poor product

My husband bought 3 mini cakes for us to sample which he brought home to us. The cakes tasted stale and the ingredients were not of the best quality, the icing tasted like plastic. The baked cheesecake tasted like old mousse and the orange cake was very dry. When I took the cakes back the owner tried to pass them off as perfect and freshly made. When I disagreed she alleged that the cakes were entirely satisfactory in her opinion and that I would not receive a refund. I told her that the issue was hardly the refund but the poor quality product. I also want to know since when does the customers opinion of a product not count? Surely if she was confident that her product was up to scratch she would have either replaced the cakes or refunded the money. An entirely unpleasant situation with an extremely rude and arrogant proprietor ?