yeah same thing happened to me last week. Received a couple new snakes and tried to feed them 5 days later on my feeding schedule which is friday evenings and they did not eat. Its nothing to freak out too much about until they have not eaten for a few weeks then its time to start taking a more hands on approach. If your snakes dont feed try again next week only offer food on your schedule as over offering can stress them out too. Also if you have been handling them a lot or if theyre in a fairly busy area this can also cause them to adjust more slowly to their new environment. Good luck and dont worry too much they will come around!