I was fired because i could not effectively clean over steam and get baked on smudges off of interior glass of hot display case.

Could not effectively get smudges off of interior display case containing hot food and steam shooting out. After trying twice then asking for help the owner then said if i can get it off you are fired. He eventually got it off and then said i can't deal with you, you can't follow simple instructions, give me your hat. I said it was hot and I could burn myself as to i had to reach over food with windex and clean the upper and lower display cases that were very hot