Long John Silver's

I visited a Long Johns location located in Houston at Old Spanish Trail and I'm standing here reading the sign of the business hours which says it close at 10 and it was 9:40 and it was lock ..This will be the second time I've inquired about this when I had no choice but to go to drive and was not giving a proper explanation.. I expected to run in and out for food but wasn't able to do so ..Can someone please let the public know if operation hours have changed