Firehouse Subs Bethelview Corners

I want to give 5 stars, because I used to love sandwiches here and people are very nice and place is clean. However, the last 4 sandwiches that my husband has picked up for me, have not been right. He is very specific with them about my gluten allergy (so no mayo in case spreader has been used on bread containing wheat). He says extra lettuce, pepper jack cheese, vinegar & spices, turkey, no mayo, and Do Not Heat, on GF bread. So, the resulting sandwich has had at least a few things NOT RIGHT every time lately, i.e.; little to no lettuce, heated; heated so lettuce wilted, no cheese or cheese melted off, mayo on it so I take benedryl to help mitigate my reaction in case spreader had touched wheat bread prior to using on mine; or no vinegar, no spices, etc. Couple times I just couldn't eat the sandwich! He shouldn't have to double check sandwich every time. He's very busy with work, as I am. Is the person taking the order not capturing details given by customer? Or are the sandwich preparers not bothering to pay attention to the order details? do they care? I want this place to do well! I may have to stop getting lunch from here if nothing improves.