Emailed Caltex over the weekend and got a response this morning. I applied for and was approved for card on 22nd Jan. In my account is 27 points for 54 litres of unleaded which I purchased on the 29th Jan. To my relief they confirmed my 5 months of spending started in Feb as it was close to the end of the month. Points will be awarded 6-8 weeks after $150 spend is met. Confident they will arrive now just have to wait and while and keep filling up.