I have a billing cycle of the 7th to the 6th each month. On the 12th I purchased a 15$ for 10Gb addon. On the bill it displayed partial charge of $12.50 for the addon 15$ for 10Gb. Fine, makes sense (pro-rated I assume). But then I see a charge for Unlimted SMS & MMS $15.00. Which I did not purchase, as my plan has already Unlimted SMS & MMS. I called Cust. Service, he said this is an error and it is the fee for the 15$ for 10Gb addon. WWWHHHAAATTT!!. Why would I get an incorrectly labelled addon charge for a monthly service that, according to my bill (partial charge of $12.50 for addon 15$ for 10Gb addon) I was already charged for. So basically I am asking how a $15/month addon can cost $27.50 in total?