I would like more information but I don't know whether to go to the store
Don't be afraid to ask questions. Store management should take the time to explain repairs and required prices, discuss problems, and tell you about employee training and experience.
what records should you keep?
Keep all records, including estimates, invoices, work orders, receipts, warranties, and guarantees. In addition to their importance in the event that you file a repair complaint, these documents serve as your service record and could increase the resale value of your vehicle.