RS 30 is deducted

Location/place: India

Name of company/service: bsnl

Sir ,my mobile no is 9438140085.On dt10 .08.2012 today 05.03.28am a message come to my mobile from 58558030 that thank you for subscribing Naughty joke service.you have been charged Rs 30 for 30 days .
sender no name BV-MOBWIN .pl.help me