I got a text message to upgrade my ATM card within 48 hours and if i don't my ATM card will be deactivated. I was told to go to
http://interswitch.t35.com which i discovered was not from interswitch company and the webpage was a subdomain of t35.com which has no relationship with Interswitch. Please ignore such text message if you see it too.
I tried the form with blank information and clicked submitted, the form was processed with a 3rd party form processing website which interswitch company will not do.
The site has been blocked as at today, you can check it out. Please do not give out your ATM information in a rush. I almost fell into that trap.
Take care