I sent a Fuji Neopan 1600 b/w film to be developed and high resolution scanned to Fotofast and it came back over exposed.

I looked at the job sheet and it had brand unknown and film speed 125.
When I questioned them they said that this info is automatically scanned from the film barcode.

Can anyone verify this or was there something wrong with the film packaging or is the developer telling me fibs. I cannot do anything about it as they send them out to a third party and don't have the film canisters to verify anything.

I will ensure that in the future I spell out what ISO the film was exposed even though they said unless told otherwise the nominated film speed on the canister is assumed to be the exposed speed which was my case.