We have been getting this call for the last 4 days and when they do leave a message, it is a guy with an Indian Accent so thick we can't understand what he is saying. I listened to the message multiple times and I couldn't make out a word of it... And I'm pretty good with understanding accents.
I Googled the number and got this forum and a few others. We have no Nicor Accounts; we have no Visa Accounts, so I am just going to assume this is a SPAM CALL to my Cell Phone and Ignore them.
I have a list of numbers on our phones just called "No" and set with a custom ring-tone of Silence. (So it doesn't ring at all) and we never worry about these people ever again.