I was harassed by text messages.

1, it's gone after being hacked. Set this number as a blacklist, which is usually found on mobile phones.

2, it is a telephone warning, its illegal behavior.

3. Call the police. Article 42 of the People's Republic of China (PRC) Public Security Administration Punishment Law shall be detained for less than five days or fined less than five hundred yuan for any of the following acts; If the circumstances are serious, he shall be detained for not less than five days but not more than ten days, and may also be fined not more than 500 yuan: (5) repeatedly sending obscene, insulting, threatening or other information, which interferes with the normal life of others;

Perform the above steps and your business will be solved.