misdescription of internet pack value to me

Location/place: narsinghpur

Name of company/service: vodafone

i called the customer care executive at 10pm oclock n asked for d internet pack of 200 mb 10days validity voucher rate..he told me to do the recharge with rs 38 ..so i did that n i used d internet too..but after sumtime i lost rs 87 from my main balance an came to knw dat the voucher i asked for is of 39..but the executive of vodafone told me that is is of rs 38..please help me…i suffered because of the company it wasnt my fault ..he gave me wrong information..