I received contact back from the General Manager of the store Shi the following day after posting my original complaint. He had a completely separate version of the events than I was given by his driver and by Grubhub previously, but he did apologize for the way my order and subsequent complaints were handled, acknowledging that he should have taken a more personally involved role by contacting me directly and offered to replace the order or provide a new lunch order if i would be willing to give them another try.
I am skeptical, but since this is the only bad experience I have had with this chain I am planning to take him up on his offer of lunch today to see what can be repaired of a long time customer relationship. Wish us luck!