Sushi Cafe - Denton

I love this place and I live right across the street now so it's so convenient! BUT I went last week and when looking at my bank statement I realized yesterday that the server had added to the already 15% tip for a TO GO order. I went today to speak with a manager. First was told I couldn't talk to him. When I explained why the person got him for me. He said sorry, but acted like he really didn't care very much. I won't ever go back. It's not okay that they think it's okay for their patrons to be stolen from.