Poor Service

On the 14th November I placed an order with Pick n Pay online app. It requested a OTP NUMBER which I processed and the money went off my account but the App had a error and my order was cancelled. So I'm now out of pocket with over R900 with no product I have proof that payment went off my account which I have sent through to customer service but I have had no feedback since then I have emailed a number of times and once I've had its being investigated. It is now 10 days later and I've not heard a thing or gotten my money back. I WILL NEVER USE PICK N PAY AGAIN THIS SERVICE IS SHOCKING