Line was painfully slow (drive through). So slow in fact I comtemplated not ordering but once you are in the drive through you can't "escape" for lack of room. Ordered 3 shredded beef, 3 shredded chicket hard shell tacos and 2 sides of guac for a total of $23.06. Beef tacos were delicious. Mom and I both dug into the chickent taco's at the exact same time and both were appalled that they tasted like fish. We threw the Chicken tacos away. I called and asked if they sold fish tacos (and they do). I explained that somewhere in thier operations the fish got mixed with the chicken because our chicken tacos had an unmistakable fishy smell. He apologized. I asked if I could return at a later time to get A) 3 replacement tacos or B) refund and he replied "We only allow refunds when the food in question is returned". Not wanting to return to the restaurant this evening, and not wanting to lug 3 fishy smelling chicken tacos w/ me, and not EVER wanting to wait in that line again I decided instead to eat the $8.67 loss and leave this review instead. I will NEVER eat there or any Senor Tacos again.