MTS / Sistema Shyam TeleServices [SSTL] — Dongle wifi ultra mblaze

Address:	New Delhi, Delhi, 110013
Website:	Mts

My device has separated into two parts and I have been running pillar to post for its replacement as I need internet for my project work.my device no is [protected].
I even visited the Corp office in okhla phase 1, Delhi but to no avail.
They have asked me to cough up any amount from[protected] rs worth of money to get a replacement.Where is the justice in this and how do I get it done.Its been more than a week and Mts customer care has been giving outdated nos of mts service centres.
Being a female student does not allow me to travel to places more than 25 kms to a service centre with the hope that they might replace it as it still has 20 gb of data left on it.
As the guy said they might replace.Where is professionalism in this?