Airtel — failure of rs.399 plan outside of state

Hi,

I have recharged my number with rs.399 (After i crossed my home state) because there was roaming facility as well.

I am now unable to make any phone calls.

1) is there any support pack that i should recharge?

2) is there something wrong with the plan?

3) how do i connect with customer care?

I receive no information from any of these airtel customer support platforms.

I need to make phone calls asap. Please look into this issue.