Hi, my sister-in-law joined a small-scale manufacturing company for an accounts position. Before her marriage, she submitted a resignation letter, but it was not accepted. Instead, the resignation letter was torn up, and she was granted a one-month leave. Today, the employer called her and spoke abruptly, stating that she must return within a week to complete pending work; otherwise, legal action will be taken. She was not paid during her leave, and her resignation letter was not acknowledged. Please advise on the next steps to take in this situation.