Cashier rang up unwanted items

<p>In 28 December at 13pm I purchased school gear. I took a pair of knee highs to the cashier asking if she could find out if a larger size was available. She then informed me that it was the only stock in that specific size. I instructed that I will be purchasing the the item at another store. When I returned home I noticed that she had rung up the socks with the rest of the items I had purchased. </p> <p> </p> <p>Whats frustrating me is the fact that I now need to go back to the store to return the item when it was not my intention to purchase it. It's now become an inconvenience to me. </p> <p> </p> <p>All the manager could do is apologize. This is not acceptable. Now I need to find the time to go to a store just to return this unwanted item. </p>