Reliance Communications — Gprs plan subscription

Sir,
I have subscribe a gprs plan provided in the realince gprs home page(R-World). According to which customer can use 300 MB of free downloading and browsing after paying a sum of Rs 99. So i subscribe the plan and Rs 99 has been deducted from my main balance as subscsiption charge. But inspite of activation of the plan i have been now charged for down loading or browsing any content in the web and not get the free 300 MB. I also give complain about the above in realince helpline. But till today not get any satisfactory reply.