They called on Veterans' day and I also got that "REALLY FRIENDLY" guy offering to send an envelope in the mail. I thought it was legit and said ok and he immediately passed me over to some automated recording of a woman that at first sounded like I was actually speaking to someone. "She" kept asking me for my credit card details and I said, please just send me something in the mail and I'll have a look. It was then I noticed the person I was talking to made a clicking sound and the exact same response and intonation was what I heard 2 more times. It was then I knew something was odd. For sure this is a scam and they haven't stopped calling since.