without my permission the setting dialler tone - Vodafone
i am vodafone customer,
my mobile number 09786152401,
during the roaming period i got call from vodafone, that call for dialer tone setting, i cut my line immediately but the took Rs 1/=, and the setting the dialle tone without my permission and took thirty rupees from balance, i had given the complaint to customer care they we will credit that amount within 24 hr but they not credit my account . my complaint number is 262331310.
my question are
1. how they set dialer tone with out my permission ?
kindly help me to get my amount,