I called that number & gave all invalid numbers to see what they'd tell me at the end. They asked for debit card number, cvc number on the back, expiration date, my zip code, my social security number (I put all 0's) then they asked for my street address number. I have them all wrong numbers & my social as 000-00-0000 & at the end of the call they say (in an English man's accent) that this card has been verified, thank you. Then it hangs up. Knoxville was spelled wrong & that let me know it was a scam.