Is Woolworths a money making scheme?

Been to Woolworths Riverside Boulevard on Saturday the 26th of March. The cashier made a mistake by voiding my card transaction. At that stage herself and the supervisor reckoned that the reversal will appear on my account immediately. Nothing was returned since then. On Sunday I was told by the supervisor to come back and that they will do a cash refund. Got to the store only to be told by the manager that it can't be done and the money should reflect at midnight Sunday. On Monday nothing showed so I phoned customer care to get told it takes 2 to 3 working days to reflect. This Morning I phoned Head office in Cape Town trying to speak to Zyda Rylands but to no avail, the switchboard operator said it will take three days and that's it! Being in business myself I know that if we do a card refund it shows immediately on the cardholder's account. So my question to Woolworths is " are you making money out our funds that's you are keeping in suspension??????? “