If a user of WhatsApp does not comply with the rules of the messaging service, specified in terms of service, it can be expelled. If the application blocks an account, the user receives the message:
"Your phone number is not authorized to use our service. Contact support for help. "
RT
Create a lot of groups and groups with strangers: Create groups and add too many strangers are restricted shares WhatsApp.
Be blocked by too many users: If multiple users you have blocked too many times in a short period of time, you will drive WhatsApp messaging service.
Send illegal content: Content is (states, messages or pictures) illegal, obscene, threatening, harassing, hateful, racially or ethnically offensive.
Bombing message to someone who does not have your contacts: This attitude can be seen as generating spam