We go to Portillo's and I always order a salad... ...

We go to Portillo's and I always order a salad... same thing every time. Went there today and was told they do not have iceberg lettuce and never have. Told the guy that I ordered a salad from there 2 days ago like I normally order it and they had iceberg lettuce. Not sure if he didn't understand what I was asking for or not. Regardless, I wasn't able to order my salad.... guess I can't go back there