The person who refused to help Antigone bury her brother's body was Creon, the King of Thebes.
Creon had issued a decree forbidding the burial of Polynices, Antigone's brother, because he had fought against Thebes. Antigone, however, felt it was her religious duty to bury her brother, defying Creon's order.
This act of defiance led to a clash between Antigone's loyalty to family and her religious beliefs, and Creon's duty to uphold the law and maintain order in Thebes. The conflict ultimately resulted in Antigone's tragic imprisonment and death.
Creon's refusal to allow Polynices' burial was a significant factor in the play's central themes of justice, duty, and the consequences of defying authority.