That's all contingent both on OP discovering the restaurant through grubhub's tactics, and on it being unlikely that OP would have found said restaurant without the existence of grubhub's tactics.
For example, suppose a fairy told OP about the restaurant and OP then Googled it to get the number. If the grubhub MITM phone number bumped the real number/website further down then grubhub is a nuisance and a thief.
But OP also mentioned they thought they had ordered from the restaurant's web site. If that confusion is due to dark patterns employed by grubhub then grubhub is full of evil wizards who must be overcome in an epic battle.
Only if OP discovered by searching and grubhub bubbling to the top of a search where the restaurant otherwise wouldn't have appeared is grubhub the knight here.
So we need to know-- OP, how did you discover this new restaurant in the first place?
For example, suppose a fairy told OP about the restaurant and OP then Googled it to get the number. If the grubhub MITM phone number bumped the real number/website further down then grubhub is a nuisance and a thief.
But OP also mentioned they thought they had ordered from the restaurant's web site. If that confusion is due to dark patterns employed by grubhub then grubhub is full of evil wizards who must be overcome in an epic battle.
Only if OP discovered by searching and grubhub bubbling to the top of a search where the restaurant otherwise wouldn't have appeared is grubhub the knight here.
So we need to know-- OP, how did you discover this new restaurant in the first place?