CREDIT CARD - Mobile Alerts Monitor your credit card transactions. Avail Mobile Alert facility and receive SMS alerts on your mobile phones in respect of all transaction of Rs.500/- and above carried out using Union Card. Mobile alerts also help to mitigate risks in case of misuse of credit card. Just call: 24 hrs help line numbers - 1800 222244 (toll free) / 022-40426008 to register for the service. It’s free.