I have been receiving such a short message saying that Alipay has exceeded the limit, but I have never spent it at all.

The mobile phone number you are using now is used by others before. After someone stopped using it. The official sold this number to you again. So you will receive some text messages from people who have used this number before. This news has nothing to do with you directly. It's a text message that people who used to use this number should receive. The person who used this number before, he did not cancel these businesses. So I will continue to send these messages to this mobile phone number. You got it. You don't mind. If you mind, you can go to the business hall for cancellation.