I run a garage. How can we retain customers?

This is not clear in one or two sentences. I think: 1 should be willing to invest in hardware, such as four-wheel alignment instrument, tire disassembly and assembly machine, dynamic balancing machine, tools, measuring tools and so on. 2. The site should be flat and clean, and the tool cabinets and accessories should be placed neatly; 3. Safety signs, 6S banners, no smoking signs, etc. 3. Auto parts majors should be prepared, even if the parts are not prepared (if necessary), they should arrive at the store within one hour; 4. The receptionist must be professional and friendly; 5. The maintenance technician's every move should show professional technical quality, which can make customers feel at ease to give you the car for maintenance; 6, customer rest area, warm, comfortable and leisure; 7. politely refuse what you can't do. 8. Try not to quarrel with customers.