Replacing my new Grandeur Calligraphy after just one month... so grateful..

1. Defect and Situation
A Grandeur Hybrid Calligraphy delivered in September has developed a serious defect after 2,000km of driving over one month.
The vehicle has been in the repair shop for two consecutive weeks (using a loaner car in the meantime).
Hyundai has acknowledged the defect and agreed to a vehicle replacement (initial approval and internal processing completed).
2. Issues with Previous Work (Dealer-designated shop)
The work done by the dealer's partner shop was a mess.
Scratches occurred on the rear window during the process.