I had 14 air stops, i was getting ready to leave the building, new supervisor came over and gave me a left in building NDA and told me t take it, I told him that I had too much air and that I would have late air, he said take it anyway, I made sure i sent a message before i left, i Had 9 late (2 stops).. Today i was told that I was getting written up, apparently the supervisor said i told him "I had alot" and never that i will have late, but i even sent a message. What should I say on my grievance?