Why do other people's phone bills send messages to their Alipay?

It's a cell phone number used by others before. Your mobile phone number is the one used by others before. His mobile phone number is bound to his Alipay, and he will receive a short message of consumption. You can bind your Alipay to your mobile phone number, so that you won't receive other people's short messages. Under normal circumstances, the system will not have such an error.