Manufacturer poor quality control caused a flood

i think the first time this happen

i would have gone to the hardware store

bought a piece of sheet metal or LExan

some polyurethane sealant

and covered the dang hole
then a coated it on the outside with automotive undercoat

this could have been done even a 1000 miles from home base

sure the factory messed up, but you made it worse by not taking it in the very first time or handling it your self

good luck with the dealer