I ordered a take away and collected my order but a...

I ordered a take away and collected my order but as I went to put salt and vinegar on the lady shouted NO that's for restaurant only the vineger is in the bag I said I don't like malt vineger that was in the sachet I wanted the chip shop vinegar in the bottle she screamed NO you can't have it I was gobsmacked so rude and ridiculous I definitely wouldn't recommend this chip shop my first visit will be my last I've never encountered anything like it