Netcare will not refund a Cash transaction 2 weeks later

On 9 September 2022, My father Mr. B Khoza, accompanied my mother to Milpark hospital for a consultation with a doctor there. They were provided with a prescription for an injection, that the doctor would use to administer a shot, that my father went to go and fill at the on premises pharmacy Clicks Milpark. He paid cash. Upon returning to the doctor with said prescription, the doctor advised the incorrect syringe was dispatched to my father and that he should go back to get his money back. Almost 45 minutes after the initial cash sale had been made, my father then returned to Clicks for a refund and was told that he would need to supply banking details for the refund to be into. Again, this was a cash sale. They could not void the sale and open the till and return the funds back to my father? My father comp**** and sent the necessary Sun 11 Sept 2022. We are headed to the end of the month. My father has received no feedback since then. if anything, they keep pushing the refund date even further. he is a pensioner and depends on every cent he has. this is truly unfair and unreasonable to expect him to wait even longer for money that was due to him on the day this error happened. After all, this was not his error. Today 26 Sept 2022, when he requested feedback, yet again, of his own accord, he was advised by the manager Hanlie Geertsema that they now need his id. For a cash transaction? and why now, two weeks after he submitted the documentation they said they needed. This appears to be a ruse to not pay him what is due to him.