After buying something on Taobao, I often receive promotional messages from sellers. 1. Very annoying. 2. How to solve the problem of personal privacy?

This can't be helped unless you don't leave your mobile phone number when you trade. I don't know how many places the package with your number outside has gone. In addition to the seller's customer service, there are warehouse packaging and distribution personnel, express scanning, sorting, re-scanning, re-sorting, distribution personnel, security property, building front desk. . . . . . . .

It's too difficult to keep the numbers private. The only way is to have two numbers, one for personal use.