The one and only time when I went there, they had a stale dish and when I pointed it out, they refused to accept. But when I returned to the buffet counter they had removed it after the chef checked it out. That is certainly not "customer service".
I went there for the first time a month back and have been going there quite often these days. It is inexpensive and very tasty. The portions are good enough for a meal. I would highly recommend this place.