Woolworths Refund Process

I paid more that what I was supposed to pay on my account on the 25th of February, I asked for a refund on the 27th of february, sent everything they required throough an email(Bank Statement), they got back to me monday 03rd of march saying the request has been forwarded to the relevant department. I have been following up through a phone call, I was told they don't have a standing procedure as to when exactly they will be able to refund my money. Today it's the 05th of march i haven't managed to pay for my chronic medication. What does one do? Not to mention going to work.