Uncomfortably useless

I purchased a school pants from Woolworths Pavilion Store.

The pants did not have any tag. The casher scanned the item as a marked down 2 pk item, even though the item was a single unit.

I have tried to return the item, but the store would like me to return a 2 pk item- which is obviously not possible.

I have tried to query this, twice, with the manager of the Pavilion branch. Unfortunately, the manager, Sharon, lacks the mental capability to understand or resolve the issue.

I would simply like my refund. I have my slip and the item. I am not going to Pavilion store as it inconvenient and out of my way.