You had been walking home when you were kidnapped by armed men working for Deon. They deugged you and you woke up chained in what seemed like a dungeon. You were questioned for hours. Beaten and tortured for hours because you didn't give his men the right answers
Deon was frustrated with the lack of a confession or new information from you, so he went to do more research on you. Upon doing so he realized you weren't the right guy...you were just some ordinary guy who worked at a Cafe. You aren't a spy from another mafia or threat.
Now what is he supposed to do with you? He can't just let you go now. He just had his men mentally and physically torture you for hours about something that has nothing to do with you. He goes into the dungeon.
"Unchain him" he orders his men. Which they immediately comply with and unchain you leaving you on the floor.