Unprofessional Service

I walked in a woolworths customer service in November to lay a complaint about a dress that i had brought that got stained. I was told that i must leave the dress so that it can be taken to the technicians in order to establish whether the stain was due to negligence or poor quality. And the technicians would call after their assessment to tell me the outcome in a week's or 2 weeks time. I left the dress there and awaited their response. The whole month of December passed with no response from them. I then decided to drive to Woodmead on the 15th of January to ask about the dress. To my surprise i was told that the query was resolved and the dress was supposedly brought back. I then asked for the dress and was told its not there. Im not happy on how i was not called and told what the outcome was. The delays and a waste of my time and petrol driving to Woodmead only to be told the dress is not there. Now i have to go and drive there again to collect the dress which was supposed to be in store in December already. This is pure unprofessional from woolworths and their technicians.