Repeated calls from this number, EVERY DAY! They don't talk, might be a sort of phone approval, checking if you answer your phone or not for having a valid marketing listing.
It is a lower your credit card rate scam. I pressed 9 to connect to them and gave them bogus information and kept them on the line for 9 minutes. The guy I talked to had a foreign accent (sounded like someone from India). I could hear others in the background, so I know it was a call center somewhere. He kept telling me to put my glasses on so I could see my card numbers better. He thought I was not reading one of the numbers right. lol
WARNING--BEWARE!! These callers are B I G credit card criminals, known as the card service scammers! Under NO circumstances, give these lowlifes your credit card number, or you will regret it forever!