Subway complaint: Upset customer

Went into the store at 10:05 and there was a line of people with some coming in behind me as well. The lady that was working there was doing the best she could and at 11:00pm there was another worker that came in and all the customers thought she was getting help. No, she left with just the man that came in with his bike. Asked to speak to a manager or supervisor but was told he was the only one there and no one else was on the schedule to work with him. also said the manager doesn’t work nights. Several customers were getting upset and were told he had to do the online orders first before the customers in the store. Somehow Not sure that is a fair way to treat the customers in the store. Asked if he could do an online order then a customer and just alternate back and forth. he said no again his manager said online customers before instore customers. He then went to the back and came out and said he called his manager but instead called the police because one customer got a little upset and was raising his voice. we as customer explained to officer the situation and he even agreed customers in the store first. He ended up getting the gentleman that raised his voice trounced from the premises. I checked out at almost 12:00 am however my receipt says otherwise. The time on the register is off by a lot. I did call the health department in Pigeon Forge to let them know the situation and was told to let Subway know first. Also, in the state Of Texas you have to have a manager or supervisor on premises at all times.