Domino's Pizza

I am frequent customer at the Domino's at 5647 Treaschwig Road in Spring, Texas. I ordered two pizzas on 11-06-20 for a total amount of $17.30 which I paid with my debit card. When the female brought my receipt I noticed that they had added the tip that I did not authorize. When I called on the young girl, she just walked off. I told her that my watotal s 17.30 not 22.30 and she ignored and rolled her eyes as she walked off. I demanded to talk to the manager and I asked them why are they giving themselves a tip and they did not answer. The manager was mute and did not respond to the question. I am probably the only customer that notices that they print two tickets one with the original price and then one with the tip. I feel that is a form of theft, if I want to leave a tip that is my decision, but for them to added without my consent is morally wrong. If you do not address this issue. I will reported to the Better Business Bureau.