Congratulations on opening!!
First, when you put your #, space the numbers out and/or spell some of the them, I have never gotten a scam call.
Second, ask parents to put daycare, child care, or what ever in the subject line, that way you can weed out the scammers. I used to respond, but don't anymore. I don't put my emai, but do put my website and that has my email, but I have never gotten a scam email in my regular email, just when they reply on CL so they must have some kind of system.?
Every time I posted an ad, I always got emails that were scams too. Then I saw people were saying in their ads to put something in the subject line so I'm assuming it works.