Rude manager

Manager at salsa Mexican grill is EXTREMELY rude. We had finished paying our bill and were sitting and waiting for out check in time. My friend brought in his food from spar however we were not going to eat it in the restaurant. The manager then comes to our table screaming saying “get out of my store” “just leave” mind you we have already paid for our bill. I’m extremely unhappy with their manager. That is not how customers should be treated even when they are in the wrong