IDEA PREPAID
It automatically applies any of its service and the amount is been cut from the prepaid balance of the mobile without asking for the service

As i have idea prepaid no. i have subscribe for astonomy alert on my mobile for just 1 month, but they had renewed it for the next month without noticying me as i don't want this service further how to eliminate that as they have automatically cut the balance from my prepaid account is this service? it is just a loot bussiness i just want to eliminate this astro service please tell me how to procede further my no. is 9977167056 please do it as fast as possible