Went here on a Sunday and it was a long wait for a table for two. Service was fast and efficient. Ordered 7 items, received 6/7 and we ate it under 30 minutes. Hostess comes over and orders her employee to give us the bill as we are done, but we corrected her and let her know our 7th item has not arrived yet. Hostess snaps back at us and says it's none of our business what she tells her employee to do, we tell her it is our business if we're paying for something we haven't received, she doesn't care and ignores us. We eventually finish and go to pay the bill with the owner, told the owner what happened and that she shouldn't treat customers like that. Owner laughs at us and doesn't comment. I get that the place is packed and they want to move people in and out as fast as possible but we weren't even there for very long, and the experience and taste was OK until the very end when the nasty hostess and the nonchalant owner left a bad taste in our mouths. Rol San is VERY LUCKY to have the customer base they have, any restaurant would dream to be this busy, but unfortunately their customer service is poor and we won't be coming back. Not worth it to eat average dim sum here with terrible customer service. No apologies just a laugh.