I waited 20 mins to get my food and I bought a footlong and got a 6 inch how do you mess that part up

This subway in particular, without fail consistently manages to get my order wrong every single time through the drive through. i live close, so i go often because i like subway, but for every 10 time

Placed an online order for a turkey sandwich with bacon, provolone cheese, mayo, and extra lettuce. There was no cheese and hardly any bacon or even mayo. There was lettuce, but certainly not extra. I