OLD OIL and BURNT food and McDonald Queenstown

I am so disappointed at Queenstown McDonald never again will I go there... their food is horrible and is old went there early in the morning with my family for breakfast... hash brown was burnt, chips were burnt and hash brown was stale all these food was fried with OLD OIL... disgusting and I vomited I don’t know if it’s the only McDonald that use old oil seems like they used yesterdays oil... I am so disappointed never again????????????