no onions in stock

Today 08/02/15 I did at shop at pick n pay in pinecrest centre pinetown to the value of R562.00. We had planned to have lasagne tonight for dinner so I did my entire shop + specific ingredients for the lasagne. By the time I reached the veg department, my trolley was complete will all the other ingredients. To my utter amazement, the store was completely out of onions. Not even a loose one lying around. Do you expect me now to remove all the other items from my trolley because there are no onions in stock? Must I stop at a tea room on the way home and use my debit card to pay for a loose onion? Such an inconvenience and such a disappointment from a large retailer like pick n pay