Online refund still pending with no response from Woolworths

Online shopping. I have resorted to leaving a review here as my attempts to contact customer services have not worked. I started emailing Woolworths on 11 May and have made 3 phone calls and still the issue has not been resolved. The last 3 emails sent to follow up have not had a reply.(Other than the automated "we have received your email".) I was charged for items that were out of stock and then double charged for an item which arrived in a separate delivery. I have been attempting to get a refund on this since 11 May to no avail. I was told by Woolworths when I did eventually manage to get through via phone, that the payment had been released on the 18th May and was told they could no longer assist me, that I needed to deal with my bank. My Bank confirmed that no payment has been made and asked me to get proof of payment from Woolworths. I am still waiting for a response from Woolworths. It is now 4th June. As a regular customer at Woolworths I am more than disappointed and have stopped all online shopping at this store until this has been resolved. Not the service I expect from Woolworths.