Airtel — international roaming amount deducted automatically from airtel

Address:

Kollam, Kerala, 691010

International roaming rental is automatically taken from my mobile without any notice. Even i didn't make any calls or receive any calls, i am working in japan since 5 years. Previously it happen in case of accidental attend of any incoming calls. But now days they deduct it without any notice. Also i am unable to contact their customer service in japan. It shows international roaming rental due to low balance.in that case why don't they send message to recharge before deducting the balance? It's totally troublesome and i am planning to change the service provider. If i recharge with a good amount who can guarantee whether they deduct all the money without any prior notice?
I recharged on 20/2/2019 for rs. 95 talktime
My balance was around rs.105
Now it shows balance is rs. 1 only

I received following message on today (21/01/2019)
"dear customer, international roaming rental charge is rs.99. Due to low balance in your account, rs.57.88 have been deducted and balance amount of rs. 41.12 will be deducted i217#3#8#9196"

My mobile no:[protected]