Subway review: Sub

I ordered a footlong meatball sub and I got a 6 inch that I could not tell if it was chicken, turkey, or tuna. Too much dressing and it was disgusting. The package had been opened. Lei delivered it then told me she had to bring what the restaurant gives her. So the receipt on the bag was not looked at and claimed she could not see it. The bag was torn open so this driver obviously did not look at anything. I can't get replacement or refund. I want to sue all of them for robbing me. Delivery of food is expensive and then this. They should be ashamed!