Not refunding card purchases in reasonable time

On Friday, I went to a local stationer (M.I.M. Stationers and swiped my card for a product, It was for R1591.94 at 13:14. Upon leaving the store, I received a message that my wife had purchased the product already. I immediately returned to the store where at 13:57 on 23/10 the amount of R1487.72 was refunded back to my card.<br> <br> I understand banks don't like working on weekends, so I waited for midnight on Monday (26/10) to receive my refund. No such refund is forthcoming. The retailer did what they should have done - they refunded me as per policy and issues me with a credit note and a refund slip from the banking terminal.<br> <br> So at this point my question is - where is my money and what is causing the delay in putting it back into my account. Surely two transactions from the same batch - one debiting me successfully and he other crediting me unsuccessfully must be strange, no matter which way you look at it.