1. Call the customer service number of Dengtu Car Rental Service Co., Ltd., which can generally be found in the company's official website or other channels. Explain your problems and complaints to customer service staff and seek solutions.
2. If you are not satisfied with the customer service staff's solution, you can consider complaining to the company's complaint department. Complaint departments can generally be found in the company's official website, and can also be inquired by customer service staff.
3. If the company's complaint department can't solve your problem, you can complain to the relevant industry regulatory agencies, such as the Industrial and Commercial Bureau and the Consumers Association. You can check the contact information of relevant institutions through the internet and complain to them.
4. When complaining, it is recommended to provide evidence as much as possible, such as order records, call records, text messages, etc. , so as to better explain the problem and solution. It should be noted that you should be polite when complaining, and try to be objective and fair while expressing your problems. I hope your problem can be properly solved.