Party City review: closed earlier than they are supposed to

Went to buy my child a costume and their online hours says they close at 7 pm on Sunday. We got there at 6:02 and they had the doors locked and someone working the doors to let people out and tell us the store was closed for the day. No my kid doesn't have a costume because i work and will not be able to go any other day. A lot of people came around that time and were upset because we could not get our kids a costume. Don't have the stores hours say one thing and it's not the correct time