Telstra taking my money and then cancel my order

I wanted to get a phone with a reasonable good data deal from Telstra, I phoned them and everything was done telephonically. Was told to pay 150$ in advance and gave my card details over the phone. Telstra deducting 150$ from my account on the 10th of September. I phoned them today (16 Sep) to find out where the phone is and what happened to the data deal and I was told that it was canceled due to the fact that no payment was made????? I then went onto my banking app immediately and I once again confirmed that I indeed paid Telstra 150$ in advance. I was told that they can not see anything on their side and that I need to go to my bank!

First of all, I have proof that they took my money and second of all why did they just cancel the deal without phoning me? It just doesn’t sound right!! Do Telstra ***** from people?????