This is one of the downfalls of ceramic coating. Even-though you told your dealer that the car was ceramic coated, it doesn't look like the message got to the body shop.
If you buff a ceramic coated car without removing the ceramic coating properly 1st, paint would look just like yours.
You need to get the entire ceramic coat removed, get a full paint correction and have another coat of ceramic coat applied if you wish to go that route.
In my experience, body shops tend to do more damage than a dealer carwash as your entire car is exposed to overspray and paint particles while waiting its turn at the shop. To fix this, every car that comes out of a body shop gets a one stop buff and wax which usually causes more harm than good.
I would talk to a good detailer get the car repaired and have the dealership pay the bill....... do not take it back to the same place.
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2020 G20 M340 xDrive - Portimao Blue - ZDA|ZPP|ZPX|1CR|1PE|6NW|6WD
2016 F10 535i xDrive - AW - Retired
2011 E92 M3 - AW……………....ED April 29th, 2010 - Retired
2007 E92 335i -Space Gray.....ED Oct 19th, 2006 - Retired
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