Confusing Customer Service

I forgot my slippers. I had earlier lost my sandals. So Barb went out to buy me some new slippers and sandals. There was a two-for-one sale at the store. So Barb got the sandals for free.

The slippers fit so well and looked so good, we thought I could go out wearing them. They were like boat shoes. However, Barb thought it would be too dirty outside to wear my indoor shoes. So she decided to go back to the store to buy another pair of boat shoes for wearing outdoors.

She talked to the lady at customer service. Barb talked her into refunding the money for the sandals. Then she bought the second pair of boat shoes using the two-for-one sale. Then she bought the sandals as well. This was a good deal because the sandals were cheaper than the boat shoes. So the two-for-one sale was worth more.

The customer service lady gave Barb some change. Barb asked her if this was correct. The lady said yes it was right.

When Barb got home she looked at her bill more closely. Not only had the lady given Barb the two-for-one deal, she had also given her her money back for the sandals. So she made money on the return.