Refund outstanding for over 2 weeks - Woolworths refuses to help

I ordered some items for online collection and was unable to collect the package on time due to illness. The items were sent back to the warehouse and a refund was to be processed immediately and automatically, I have not been refunded in over 2 weeks now and the process was not supposed to be longer than 5 days. I have made several calls to Woolworths regarding this matter how I keep getting the runaround. Very disappointing!