Burger King complaint: Unprofessional and rude manager

My son is 8 he has been singing the Burger King song for awhile and has never been to Burger King before so he must have gotten it off commercials. Today I took him for the first time. The lady took are order my son even sing the Burger King song to them, they gave him a grown and he thought he was so special. We sat down in a booth waiting for our number, this tall man that seem obnoxious since we had walked in the door, yelled out my number he said whopper Junior whopper with two fries, I said no sir that was one fry and one onion ring, he seemed upset took the bag out of my hand and said ruefully it will be a second. I sat back down, he said here. Went back to the booth there were 2 onion rings. I went backup and said sir my son wanted the fries he turned around and said I’m going to have to charge you, I spent $20.00 on a made meal, he just handed me the fries, I ask for a try he said they didn’t have any. As we were eating he Was swearing it was upsetting my son. I ask him when I just got up not finishing are meal if he was the manager he said yes, I asked what his name was he said Charles. I couldn’t believe a Business was run so obnoxious and loud.