Idea Prepaid — Simcard starts to cease by idea manipulation

I have been using IDEA prepaid for the last less than a half year and my validity ends around june or july...IDEA people are mischievious and they manipulate connections on their own...I do not know why because of desire to selling more idea in haywire way...It has been more than 20 times they have done this to me...whenever i switch off and switch on my mobile it shows EMERGENCY CALLS only and when i call my other friends having IDEA prepaid using my MTNL landline they say they are not having such problem it is working fine...So, these bunck of crooks doing to my no...PERHAPS they want me to cease this no. so that i can buy another number of IDEA...i m not such fool will either go for AIRTEL or anything else...IDEA are hell...they are worst connections to avail...VODAFONE only teases with their marketing strategies but they are on the whole good service providers...GUYs do no go for IDEA