BILLING QUESTIONS

- Did you make any changes in your account previously? 
Or Did you buy any devices in your accout?
- May I know how much is your expected bill this month?
- Do you see any extra charges that you didn't know of? 

TECHNICAL QUESTIONS

- Are you able to receive to make a phone call or messages?
- How many signal bars do you have right now?
- Since when did you experience this service interruption?
- Do you happen to see airplane image on the upper right corner of your screen?
- Did it happen for 1 or more two numbers?
- Where did you experience the interruption?

ROAMING QUESTIONS

- What country are you going to visit?
- When do you plan to travel abroad and for how many days?
- What services are you going to use while you are in abroad?