Such messages are generally pushed by merchant clients and are not sent from operational numbers. If you don’t wish to receive messages from the respective merchant, you can go to [Messages] >> tap a message >> tap the three dots in the upper right corner >> [Block & report spam]. Besides, to avoid receiving such messages, you can also go to [Messages] >> [Profile] >> [Messages settings] >> [Spam protection] >> turn on [Enable spam protection] to help detect spam.