What happened when I received a refund message without buying anything?

This should be someone who maliciously used your mobile phone number, maybe someone who has that kind of malicious refund, and the mobile phone number randomly filled in just corresponds to you; Of course, you can also appeal to the other party's account for refund through the mobile phone number.

After shopping online, there will be your buyer's information, including phone number, address and name. Then the merchants use this information to generate some counterfeit banknotes. Then send some empty packages to buyers, so as to achieve their brushing effect.