I wish I had done a bit of research prior to coming here - if I had known about this place's shady reputation, I would have avoided. I recommend you to do so.
The food we had in general was ok, with us having dim sum on a weekday afternoon. The restaurant was quite bare, which is perhaps the reason why the staff/manager (?) felt the need to try to cheat us?
Upon paying for our meal, I put down two bills - I knew exactly how much I put down because I only had a certain number of crisp bills in my wallet that I had just received from the bank that day. My cousin who dined with us, also saw exactly how much money I put down. This didn't stop the server or manager (not sure which one) from quickly switching out my bills (which I saw from the corner of my eye) to make it look as if I had not paid enough money.
If this was a matter of a bill going missing, perhaps it may have fell on the floor or something like that...but somebody placed another crinkly bill of smaller denomination instead (which I definitely did NOT have in my wallet), which clearly demonstrated intent to deceive. I had to pay MORE money because I could not prove what had happened.
This has never happened before, and I'm still quite blown away at how bold this restaurant could be to try something like this...and just to make a few extra bucks? Ridiculous. It wasn't until I asked around until I found out that this place apparently has a reputation for being "crooks." I wouldn't trust my cash OR my credit card bill around this place.