I used Uninor for about a month and had to eventually stop, for it was a constant pain. Uninor undoubtedly provides one of the most affordable plans but the customer service is really bad and the network coverage is worse. I had switched to Uninor is haste and it proved a wrong decision as I did not receive any Network coverage in my apartment, or when in elevators or in basements. I never understood how would I make use of the extra talktime they used to provide, without any network coverage.
I have switched back to Vodafone and every thing is back to normal.
Also I have learnt that "Haste makes Waste".