They're annoying. For example, they say 5,000 when taking service, 1 hour later the master calls, says 7,500, 2 hours later they say 15,000 Dec. The last time you leave, you'll be 25,000 before you know it. If you object, they will ask for a service fee for repairs that they did not do, you will pick up your car with the police. When they do one thing, they spoil another. You come and go, they'll stall as soon as they solve it. May Allah keep it away
As always, they are specialists in their work. Only the prices are higher than the market. There should be more flexible discount rates for this and for paying in advance.