Aircel — no network from past 24 hours

Address:

Mumbai City, Maharashtra, 400081

I stay in mumbai borivali. My son has no network from past 24 hours and it's happening for 2-3 days. I called customer care bt it's not one is picking up the call. It's my business number. What to do? Take some actions asap do i have to port my number to another operater?? How to resolve this issue? I have called [protected] many times but there is no response.