Terrible Experience!

Terrible Experience!
We ordered a burger with veggie patty and they got us beef patty. My friend does not eat meat at all, it's against her strict religious practices. Unknowingly she bit into the meat burger to find out it was no veg! The server minimally apologized for the mistake and replaced the burger with the one we asked for initially. Instead of ensuring that we were doing fine/ if the burger was right this time/ if we needed water/ anything else- the server never checked upon us. He never came on our table to get the bill, we paid through the screen on the table by ourselves and left. We tried to take this to the manager who thankfully took this seriously.
The server did not show any professionalism, you guys are supposed to serve the customers the best way possible and instead you gave us arrogance by never showing up on our table to check if we were doing fine. This is a big problem because he did come to the tables next to us 'several times' to see if they were doing fine and needed anything else. why not us then? He made us feel like we were doing this deliberately to get discounts on the food. FYI- Even though you did not charge us for the burger, we tipped the server with the price of the wrong burger. Money is not a problem but his attitude was! Very disturbed and disappointed with this experience.