POOL SHOP DELAYING IN PAYING REFUND OF GOODS RETURNED

The Meyersdal shop, debited us instead of crediting us for a pool chlorinator we returned. Now to get our refund back plus the extra debit they took is proving to be a nightmare. No communication from their accounts department and no feedback on when payment will be done. They don't answer their phones and only when they want to reply to WhatsApp only.... it's been over a week now and we are no where closer to knowing when our money will be refunded. The staff at Meyersdal shop stand at the door refusing us to come in. Absolutely shocking!!!! Give our money back.