Swiggy — Why Packaging charges add ?

Helo Sir/Ma'am,
I had Swiggy ordered from Chandigarh Manimajra McDonald's Branch. But this branch charges packaging fee. Who gave them authority to charge this packaging fee because everybody knows that whenever food is ordered it deliver's in package only. Which order said them to charge packing fee. I want answer of that or else i can go to consumer court to clarify this to me about the packing charges. Because i don't want that some other customer become victim of same issue.
My Email id - [protected]@gmail.com
ORDER ID #[protected]