We have checked your orders and noticed that you have used 80OFF16 - Promotion Code. Kindly note that this code is offering 80% discount for the first 3 months and since the 'Big Data 128M' is annually costs 15$, Then there is a remaining amount of $12 that should be paid for each VPS order to be proceeded.
Would you like to create a new invoice with the amount of $12 for each of your orders ? Otherwise, If you are not comfortable with these pricing we can cancel the order and offer a refund.