Sentosa Malaysian Cuisine

This place leaves me with a bad taste in the mouth. I was there with 2 friends last night. Total bill including tax came to $46.60. Therefore the 3 of us each took out a $20 bill to pay for the check (this restaurant does NOT accept anything other than cash). When the change came back, there was only $3.40. We were puzzled and asked the waiter who brought us the change what happened. Another waitress came around, and insisted that we gave $50. That was odd, as the three of us all saw the three $20 bills each one of us took out. We were very clear on that, as none of us had any $10 bill in our wallets. The restaurant not only refused to give back the $10 they owed us, the waitress was very impolite and raised her voice claiming that she was absolutely right. We were annoyed but didn't want to cause a scene, so we left. We would have given the $10 as the tip, but with the attitude we received, we vowed never to go back there regardless the quality of food. That was NOT what we would call service. It was the most horrible dining experience I have been through.