KIA Motors review: Backordered parts

I unfortunately had a deer run out in front of my 2019 KIA Sorento and it went into the body shop (Third Generation Auto Body Nesconset NY [protected]) for repairs and one of the items is on backorder. The part in question is P/N: 86510-C6510 has been on backorder since 12/7 and finally shipped from KIA Corporate in South Korea on 12/14. The dealer that handled the transaction, Generation Kia Bohemia NY, totally messed this up by not communicating with the auto body shop and my vehicle has sat idle for nearly 3 weeks. Now it has to wait for the part to arrive, either by air or sea, to get shipped to the auto body and them painted and put on my vehicle. I have been without my vehicle since November 28 and it looks like I'll be without it for another month. (Assuming the part is coming by sea). i found the exact OEM part at KIAPARTSNOW.com but evidently I have to wait for the part to come from Seoul South Korea when the actual part is sitting in California. I've lost a considerable amount of time for apparently no reason what so ever. Very frustrating to say the least. I want KIA to pay Monthly payment since it has been sitting idle for over a month and would like a good explanation as to why the part that I found, an OEM part mind you, isn't good enough that I have to wait weeks for it and I get screwed in the end. I passed my 30 day rental period through insurance and still I have nothing. I really want answers now as someone, other than myself, should have to pay for these delays