Friendly Thai (again): could this be the worst service in North London?

7th December.

SINCE THIS WRITING THIS REVIEW, THE FRIENDLY THAI HAS NOW CLOSED. THE REASON FOR CLOSURE IS NOT KNOWN
I have previously written about the Friendly Thai restaurant on Whetstone High Road. I commended the food but did not care for the service http://worldofeating.blogspot.co.uk/search?q=friendly+thai
We went there again as part of a group of 7. To make things easy we ordered one of their set meals for 3 and a set meal for 4. This could not have been simpler as the three were sat together as were the four.
What ensued was some great food as referenced in the previous note, but the service on a Saturday night is appalling. They simply cannot cope with their own success, and should consider extra staff on Saturday night when it is always full. I would guess it took about an hour from time of entry to restaurant to appearance of the first item of starter. When the order got mixed up i.e. some of the three going to the four and vice versa, they tried to blame us initially, and when we stood our ground, a heated argument, presumably in Thai, ensued between two staff members, and conducted across our table. This is a great shame as the food is great and is also hot.
When the bill arrived, it was largely uninterpretable but priced within credibility, and already had 10% added for service which I proposed was taken off. My wife pointed out that we probably would go back there again (but not on a Saturday night) and refusing to offer a tip was restaurant suicide,  but we should never had booked in the first place on a Saturday night.