My prepaid mobile plan is $30 monthly (autorecharge with credit card) for number 0414917748, which was recently changed from $40 monthly to $30 .
However I still found out my credit card was charged $40 on 3/1/18. I am quite sure the other mobile plans with optus registered for autocharge with the same credit card is also $30 monthly. Would you please track the recent change under this mobile number? thank you very much.