Baggage delay

I am trying to get assistance with the following query but find the website to be not user friendly. We, Sonja Nelson and Hannelie Wickham used your airline to fly from SA with a stopover at Perth and then we went to our final destination in Melbourne under booking reference ND**** flight number QF*** from SA to Perth and QF*** from Perth to Melbourne. Upon our arrival in Melbourne on the *th of February our luggage was not on the flight and was only delivered to us late on the evening of Monday, the 6th of February **** after various calls, confusions, etc. It was delivered at the house of Shaun Ashdown at ** Niblick Circuit, Sandhurst Victoria. Contact number **********. We had to incur expenses to obtain alternative urgent medication that was in the luggage and wish to file a claim at our travel insurance and we need confirmation from your side that the luggage was indeed delayed for more than * hours. Can you kindly assist.**We are unable to claim luggage delay from our insurance without confirmation from your side that this was indeed the case.