Worst and most disrespectful Chef !!

I have been going to Asian point a view times asking for fried prawn tempura however instead of Avocado i ask them to replace it with cucumber. Every time it has been no problem and was i assisted with no complaints. I visited them again on the 23/12/2018 asking for the same order however 1 batch with avocado and the other batch with cucumber. The teller guy had no problem assisting me however when he gave the order to the chef the chef had such a rude attitude pullling these irritated faces and then rudely telling me that its a problem because they wont know which of the fried prawn tempura are with avo and which ones are with cucumber.. chef advised me that they can only make without avo or with avo. I then said i dont understand as i have been visiting them everytime with the same order and it has never been a problem.the chef at this Restaurant is exstremely rude and has no respect for clients that are regulars.