Not willing to refund & no indication of exchange

Good Afternoon, I would just like to enlighten you on a recent incident. My Mom (Bernie Fourie) purchased a few items at our Howick Mica branch - a few energy saving globes, a gift for my husbans (head led energizer lamp) with came to the total of round about R200.00. My mom had replaced a blown globe with one of the new ones purchased on the 18th April. Only to discover that it was not working, as my husband was going into town on the 21st April he offered to exchange it for my Mom. Unfortunately he did not have the slip at the time but was asked to return with the slip and the faulty glove. So after getting the slip from my Mom he went back to town the following day 22nd April. Although now producing the slip (proof of purchase)they said it cannot be exchanged - now two waisted trips into town.This is totally unacceptable and wrong. Negative publicity travels further and faster than good. With customer service like this it is no wonder that the store has slowly being going down.