Review Disrespectful crew

We went to sierra Madre burger machine beach in Mandaluyong city and customer service experience there was unpleasant and awful. The person who assist us with our order greeted us instantly with an scowl on his face and shouted ask asking for our order, when I ask the person if he was angry he suddenly become calm but kept on bad mouthing us. I don't like the attitude of the crew not even smiling and we don't want to visit that burger machine again waste of money and Burger machine is a big company how come they not able to provide any receipt for us.I hope someone can take action about our complaint.