You should pay back the money in time according to the agreement. If the money is overdue, you need to pay overdue interest and bear the liability for breach of contract.
However, it is illegal for debt collection companies to knock on the door. According to the Law on Public Security Administration Punishment, anyone who intentionally damages public or private property shall be detained for more than five days and less than ten days, and may be fined up to 500 yuan; If the circumstances are serious, they shall be detained for not less than 10 days but not more than 15 days, and may also be fined not more than 1,000 yuan.
4. You can call the police for disposal.
I suggest you pay back the money in time, otherwise the other party may sue.
Extended data:
"People's Republic of China (PRC) Public Security Administration Punishment Law" Section III Acts and Punishment of Infringement of Personal and Property Rights
Article 40? Whoever commits one of the following acts shall be detained for more than 10 and less than 15, and fined for more than 500 yuan 1000 yuan; If the circumstances are relatively minor, they shall be detained for more than 5 days 10 days, and fined from 200 yuan to 500 yuan:
(1) Organizing, coercing or tricking/kloc-people under the age of 0/6 or disabled people into performing horrible and cruel performances;
(2) forcing others to work by violence, threat or other means;
(3) Illegally restricting the personal freedom of others, illegally invading other people's houses or illegally searching other people's bodies.
Article 41? Those who coerce, trick or use others to beg shall be detained for more than 10 and less than 15, and may also be fined less than 1000 yuan.
Those who repeatedly pester, forcibly beg or beg in other ways that hinder others shall be detained for up to 5 days or given a warning.
Baidu Encyclopedia-People's Republic of China (PRC) Public Security Administration Punishment Law