RCOM — Compulsory portability without lifelong package

Address:	Patiala, Punjab, 147201
Website:	www.rcom.co.in/Rcom/personal/home/index.html

I am from Punjab, I received a call from company that my prepaid CDMA mobile no [protected] will be deactivated on 5-4-2015 and I have to get it converted into GSM,

Now my problem is that I have purchased a plan (about 10 yrs back) in this plan I am getting 500 mints every month from R to R all India, because I have paid a lump sum amount about 10 yrs ago and getting this facility every month regularly for the last 10 years.
At the time I purchase this plan, it was life time. Now if i opt for portability from cdma to GSM, this life time plan should also be given in gsm.
Company refuses to do so.
So please let me know what should I do to continue this facility
My mail ID: [protected]@yahoo.com