When Shamita disqualified Umar and berated him saying he doesn't have manners, Umar exploded on Shamita and told him she is a contestant too and she is not big boss and should act like a contestant.
This is where Umar is wrong. He doesn't know the game he is in.
Shamita is NOT a contestant. She is the owner of the house. She pays Umar's salary. Umar works for her. Umar uska naukar hai aur Shamita uski Malkin hai. Malkin memsaab kuch bhi bol sakti hai par naukar chaakar his zurrat ki woh malkin pe awaz uthaye!
The sooner Umar understands this, the better it will be for his life and for his success on the show. So he should completely remove his galatfaimi ki Shamita is a contestant on the show.