Scam! These scum bags scour the autotrader and call. they always ask what is the mileage when it is clearly in the ad. simply ask them if they are a private buyer before you answer their question if your car is still for sale. When they say they are a reseller, just hang up.
I call their phone number and let it ring and ring...I use a google phone so they cannot trace me whatsoever. it drives them nuts.
Just got a call from this number.. Turns out they claim to be a financial company that gives loans to people to purchase your car. They charge you an upfront fee of $500..but you can negotiate it down to $250.. (strange).. and then they market your vehicle..if it doesn't sell.. you "get your money back"..
When I asked to get something in writing first..before just giving out my credit card number they hung up... huge signs of a scam. Be aware..!