Same with me. I tried to stop all auto renewal packs, sending an sms stop to 155223. But did not worked.in airtel app also in manage services activate/deactivate dnd option is there, but no option to deactivate auto renewal packs. This happened in landline phone also earlier with me, without my consent they upgraded to higher pack, when i made complaint, they said current plan is not available now. When i said then stop plans i do not want airtel, then suddenly they corrected to old plan.
These guys are money suckers.
God should see them, no not god, trai should see, as in our case trai is the god.
Airtel customer support has been notified about the posted complaint.