Optical in Real Canadian Superstore

I am frequently disappointed by the empty shelves, especially of basic items such as butter and eggs. This morning, August 16/2018 was no exception. There was also no iceberg lettuce. And I wanted some frozen puff pastry, but the only boxes were beyond my reach at the back of the shelf. I could find no employee nearby to help. Shopping at Superstore is my usual habit, but my, I am getting rather fed up with the way things are being handled there.