Chewy.com just confirming my first order with them since it was a large order. So if you order from the first time through them just expect a call to confirm and then you won't have to do it again on future orders.
It is Chewy.com. I had ordered a special prescription dog food and they did leave me a message just telling me they were trying to confirm the special food with my vet. I didn't answer as I don't answer unknown long distance #s, but this was legit and had I known I would have answered.
The call was from Chewy.com. a mail order pet supply company. I had accidentally made a double order and they were confirming before they shipped and charged me again. Excellent company to do business with!!