Fraudulent real estate

I own a house in pine town and I’m currently working abroad. I found this real estate agent who took care of my rentals since I was away. Last month my tenant passed out. I since found out that the rental agent has been charging the late tenant extra money and now is with holding her deposit. I have new tenants and this lady has not returned my remote and spare keys. The electricity bill hasn’t been paid. She is ignoring my calls and my plea to return my belongings. Please help me. I have attached her business card.