Long wait for a mere mash and gravy

Went to buy a simple mash and gravy for my 8 months old baby who was hungry and already restless.I waited approximately 15 minutes for a mere mash and gravy as if I was buying the entire KFC. The time waited equals the time I would have taken to get home. It was a total waste of my time. The worse part was that I was just standing there helpless staring at my mash and gravy waiting for someone to hand it to me.