Blatant Theft..Non existent service

Last year my Father bought electrical goods from Autozone Ladysmith. The good arrived were supp**** but were unfortunately incorrect. He returned the spares (which they took back, and said they would supply the correct spares). However the correct spares were unavailable so when he asked for a refund they said electrical goods are not refundable. Now firstly according to the Consumer Protection act ALL good ARE refundable if incorrectly supp****, and secondly they took the goods back, so now they are sitting with the returned goods and my fathers money??? That is just blatant theft....my father complained to the Autozone customer care who got back to him and said they would speak to the owner but nothing happened. When my father followed up the owner (some time later) told him sorry electrical goods are not refundable. this has been dragging on now and I feel Autozone Head office need to do something to stop their Franchisees from this form of blatant theft.