As long as it is not a violent collection and it is in the informal sector, it is legal to collect at home.
The bank's door-to-door collection of credit card arrears is to safeguard the bank's own basic rights and interests, but if it is other credit disputes (not malicious credit card arrears), the public security organs have no right to intervene.
According to Article 26 of the Measures for Lawyers' Practice: "Lawyers should abide by laws and regulations in handling cases, adhere to the principles of fairness, justice, honesty and diligence, and must not obtain case information or influence the will of others by means of fraud, threats or bribery". This means that lawyers must abide by laws and regulations during the collection process and must not use fraud, threats or bribery.
I hope the above contents are helpful to you. Please consult a professional lawyer if you have any other questions.
Legal basis: Article 680 of the Civil Code prohibits high-interest loans, and the loan interest rate shall not violate the relevant provisions of the state. If there is no agreement on the payment of interest in the loan contract, it shall be deemed that there is no interest. If the loan contract does not specify the payment method of interest, and the parties cannot reach a supplementary agreement, the interest shall be determined according to the local or the parties' trading methods, trading habits, market interest rates and other factors; Loans between natural persons are regarded as interest-free.