@Jackie_F Did you try rebooting the phone first , and check again maybe try logging in in different device or try the app instead of website to check . If still not there contact support
If you bought extra data and you see the payment come out but havent received the data/still cant use data, i would suggest contacting a customer service rep directly so they can look into this transaction and make sure it went through smoothly. You can message them privately here:
