Reliance Communications — Charging for services not asked for

I am using mobile No. [protected] of Reliance Comm. which is prepaid.
Suddenly I started receiving Shayari and Khel SMS's and on enquiring I was informed that these services were activated by me and Rs.40/- has been deducted. On my protest that no such services were ever asked by me I was told that the services were stopped immediately but the charges will not be refunded and the customer service executives were very rude in their replies.
This has happened before also and that time also no money was refunded.
It seems that Anil Ambami's team inorder to increase their profits which has come down due to price wars has started looting their customers by doing such practicies. Very pathetic situation, bad company and worst call centre guys to talk to.