Can I call the police if I send and receive text messages to harass my family?

Of course. If there is an emergency, such as the loan company sending someone to the door to demand payment, using abusive, threatening, intimidating, smearing and other ways to take excessive actions against the borrower's family, then you can immediately call the police and immediately stop the behavior of the dunner. The police will mediate according to the case. If mediation fails, they shall be detained for not more than five days or fined not more than five hundred yuan. If the circumstances are serious, they 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.

Legal objectivity:

Article 42 of the Law on Public Security Administration Punishment commits one of the following acts, and shall be detained for less than five days or fined less than five hundred yuan; 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: (1) writing threatening letters or threatening the personal safety of others by other means; (2) publicly insulting others or fabricating facts to slander others; (3) fabricating facts, falsely accusing and framing others, and attempting to subject others to criminal investigation or public security administration punishment; (4) Threatening, insulting, beating or retaliating against witnesses and their close relatives; (5) sending obscene, insulting, intimidating or other information for many times to interfere with the normal life of others; (six) voyeurism, sneak shots, eavesdropping, spreading the privacy of others.