Airtel — Sim card not showing network

Address:

Kalasapadu. Kadapa district. Andhra Pradesh. 516217

I replaced my sim card with new one. Store representative told me 24 hour but it's been more than 50 hours still my sim card not activated. Not even showing network. I contacted customer care but he is saying my sim card is active. I changed the sim to another mobile but no benefit. Now I can't go to store because it is 250 kms far from my town. Please help me out of this. Thank you.
My alternate mobile number is [protected]