HELP! kenyan sand boa food

[himynameis]

Hello, I am new to the forum and have just purchased a baby kenyan sand boa. I ordered frozen pinkies to feed him that were supposed to be delivered when he came, but they didn't come. I called them and the lady there said that the rodent farm was on vacation and that the mice won't come until next week, three days after the snake is supposed to eat! I want to know if I can get pinkies at any pet stores or use any substitute food.

Thanks