Tata Teleservices — tata walky services closed

Address:

Chennai, Tamil Nadu

I believed the brand name tata and bought a tata walky by paying 2000rs for the device and 3500rs for the fancy number for my business.
I spent so much amount to share the landline number to the public.

But now they are simply telling that we closed our services. U please go to nearest tata docomo store and pay 1500rs and change my device to gsm device with new number.

Now i can't be able to use my number[protected].

What should i do now?
Whom should i blame?
Tata company or
Myself for believing them???

Who will solve my problem??