Hi I got a text saying that I have used 90% of my data then it suggested to use data top-up or standard data overage rates will apply. I chose 1 Gb which is $15. Then I got another text that 1 Gb has been added. I got an email afterwards that my account has been changed because of the added data and the monthly fee is $15. I've checked my account right away to check if this is only for this month because I don't want to have an extra data after this month, it only says it's one time fee so I'm not sure if that's the answer I am looking for. Another thing, I've checked my acccount and it says there my overage charge for data is only $10/1 GB which is much cheaper than than the top-up. How come it wasn't included in the text message for the top-up that the overage charge is only $10?
***Edited to add Labels***