Apollo Banana Leaf Tooting

We had been to this restaurant today as a family to celebrate a birthday. We were the only Sri Lankan/asian family in the restaurant at that time. Food was good, but the way they treated was not so acceptable. We were only half way through the main course and the waitress lady who was serving us brought the bill to our table and left without saying a word. All of us were absolutely shocked as if she had done this purposely and wanted us to leave… We hadn't even asked for the bill. We had no idea how to react. We spent about 15 mins trying to get her attention to our table and when she eventually decided to come to us, we asked why she did that (hoping that she did it by mistake for a different table), but more shockingly, all she said was "oh it's okay if you wanted to eat more". Thats all. We were not even half way through eating.Totally an ignorant answer to our question and not even an apology. We stopped eating and left the restaurant straight away (of course we paid our bill)....and she didn't even try to ask or explain why that had happened. Not sure why the waitress lady was that rude but.... we are never going there again. The birthday was ruined.
This sort of attitude is not acceptable and if they are targeting customers other than asians for an ?!?"authentically" asian restaurant, I cannot help laugh.
Good luck Banana Leaf Tooting, thanks for your poor service.

Note - this post relates to incident happened almost 6 months ago. And I do not think this restaurant is now any different to what it was before.

Update - Tried once more to eat here with similar experience. Reported to the staff too. Not sure how serious they take these.