If your validity expired more than 90 days ago, your number is likely released to the pool. No recharge will work. You cannot recover it.
If you reported your SIM lost, or someone else did, you cannot unblock it digitally. You have to prove ownership.
Frustrating! Don't worry, I'm here to help. Unblocking an Airtel SIM can be a relatively straightforward process. Here are the steps to unblock your Airtel SIM:
Sorry to hear that your Airtel SIM content is blocked! Here are some steps to help you unblock it: