Carsonia Parker > writes:
> I do tip for takeout depending on the place, usually about 10%. I
> like to establish a good relationship with restaurants I like which
> results in good service when I return.

How about this strategy: when you go fetch your takeout food,
if it's all messed up as you described, complain to the manager
about the problem; if they don't fix it, leave and don't come back.
Be sure to tell all your friends.
There's no shortage of restaurants.