Your first statement forgotten already? "
So I had a bottle of drain cleaner which I forgot to put the lid on my washing machine - on my balcony - I live on a top floor condo
Well the wind blew it over - overnight - and two cars below, are now covered in stains which cannot be removed......."
The owner doesn't have to accept whoever you are comfortable with to repair the car. You where negligent, you pay the damage and stop looking for silly excuses and blaming others.
If i was the owner the car would be in the repair shop until you paid and you would be paying for a replacement car too.