I just had the exact same experience. They follow up with a "supervisor" that gives you a confirmation number and contact number supposedly confirming your lifetime interest rate reduction. I reported it to my credit card company; hopefully, their fraud department will investigate these clowns.
These guys must be busy from the number of reports. I know people from San Jose so answered it. Automated voice troll started to talk about credit card rate ... click!
These guys sounded Russian and said they would lower my rate for my lifetime. They knew each credit card I owned but did not know the details. They were trying to phis my CC information from me. I cancelled the card.
Nunber appeared on my cell phone..Never answer calls of numbers I don't reconize. et these alot on my cell and land line. All for credit card services. They should all go to jail.