Joke Collection Website - Blessing messages - Online shop merchants keep my personal information and keep sending me promotional information. Is the business illegal?

Online shop merchants keep my personal information and keep sending me promotional information. Is the business illegal?

If you have bought something from his family, this nature cannot be said to be serious. You can find the owner, warn him first, and don't send promotional information indiscriminately. If he doesn't listen, you can refuse to receive or hack his mobile phone number, or complain about him on the e-commerce platform. Still don't listen, and then make a plan. Such things are commonplace, but they can't be managed.