It is divided into two branches, one is a bank and the other is a guarantee company. According to relevant information, this situation is likely to be the result of joint cooperation between banks and guarantee companies. Estimate that there is a problem or fault in the system. Generally, cars are paid in installments once a month, and there will be no payment twice a month. The installment fee should be deducted once a month, and there will be installment principal and handling fee in the monthly bill.