Depends on how you define "free". If it means neither spending time nor time, then it is definitely not. Some people can get some small gifts without spending money, but only if you spend a certain amount and then give you some small gifts as a reward for customers, but only if you give him money to earn. On the other hand, if you help him win popularity and introduce his products to others, he may also give you some benefits. The most typical thing is to invite friends to register. Your time should also be valuable.

As for receiving early education supplies for free, there must be his purpose, not to say that he will give them to you directly. If you leave your mobile phone number, they may call you, sell you products, and then say that if you buy their products, they will give them away for free. At some point, you may be tempted to buy their products, and they will also give you gifts-I guess that's what they mean by "getting preschool supplies for free". And children's products are generally very profitable, you have to earn, and you don't lose money by giving something.

I don't know if you are worried that the message they left you will have other uses. I think not.