Charged for something that was returned

Ordered a bunch of roses on Woolies Dash for a ***orker that was leaving. The co worker left early so i cancelled the order while it was still being shopped. An hour later (and after i had already reached home after leaving work) i get a call from the delivery guy saying hes at my work gate. I proceeded to tell him that the order was cancelled an hour ago and if he can please take the roses back to the store, which he did. I was still charged for the order though. I called enquiries yesterday to find out why i was charged. I was told that Norwood branch had not informed them of the order being returned and i still havent been refunded even though i was told they would get back to me.