BSNL — unfair deductions

Address:

Kendujhar, Odisha

i have using a BSNL number([protected]) for only Internet purpose in 3G data card . i have already DND activated . but it has automatically received a message, dated[protected] "Dear User, you have been successfully Subscribed for Shayari.Amount Deducted Rs 5 & Service Validity 7 day" when checked my main balance ,actually it deducted 5 rupees .i called to customer care they told me we could not returned your money . what i will do now. please help me. thank you.