Hello how may I help you? Can you check how much monthly data I have in my plan Yes, you have 4 gigabytes left this month. Do I have to pay if I exceeded the limit Yes. However, you can double your data amount for just $10 a month! Great. I want to avail that one. Sounds good! Should we charge it to your card? Yes, please Consider it done! You now have 8GB left this month. Thank you You're welcome