Airtel — postpaid not activated

Address:

560037

I have moved out of country trusting airtel will be available. I kept my number active so that it will be useful later on. Now i have a issue my number was deactivated as it was not in use. They charged me for reminder call as well.
Now, i have to send money home and i'm not able to receive otp. My father cannot access my account. Its pathetic service that only demands money. I revisited my past bill just to realize that airtel charges rampantly. I have always paid 500 extra every time previously. I have generously paid my bills without any complain still they haven't activated my account.