Airtel — smart pack activation

Address: New Delhi, Delhi, 110075

My postpaid data got finish & i wanted to activated a smart pack of rs 300 for 1 gb. It was not successful becoz of system upgradation. I made a 2nd attempt with rs 175 for 500mb thinking that maybe that pack has prob. This was again not successful. I tried a last 3rd attempt with rs500 for 2gb then i was told its done. After few min i get a msg of all 3 packs been updated. I just wanted small pack but tried different packs thinking some problems occurring with individual pack updating. But i see my acc is charged with 300+175+500 rs without my knowledge. This is cheating.