1, Increase the credit limit by sending SMS CRLIM <last 4 digits> to 5676766
2, Call customer care 1800 1080 and ask them if you can upgrade to LTF. If not you want to close it.
3, Talk to your RM. Go to nearest branch and tell that you want to close it because it is not rewarding much.
4, Dont take quick actions. Get time and respond slowly.