Poor Service from ASAP after receiving incorrect order

I use the ASAP/ Pick n Pay online service. The wrong order was delivered to me on Saturday afternoon. Since then, I've been struggling to receive my correct order. Today I've asked for a refund. I would be refunded only after the wrong order is collected from me—what a disappointment. 1) It is not my problem that I've received the incorrect order. 2) Why must I be inconvenient for poor customers' service and not be refunded?