Airtel Prepaid — deduct the money

Address:

Jalandhar, Punjab

hai i am parveen maini,from rurka kalan,
my complaint is about deduction of balance rs315 from my airtel prepaid mob no. [protected] on11/03/2012.
the balance on 11/03/2012 is 320 lumsum since 4:30am ,then request toon customer care to activate the inter net sacheem (100mb in 10rs for 24hurs) & they says
"sir' it will be activated very soon."
then the sms is recived by me of activation.
and i start the net lumsum 04:45am and end on lumsum 05:25am.
after ending the net the alert of ending call is come & i i warried the balance is
rs02.26 only.after that day i call customer care so many times but answer is not satisfid.
some times they put my call on hold for15 minuts and said to me our seniour is solve your problem.
pls solve my problem or guid me.
thx