fault on both sides here. Greggs dismissive response at the time was pathetically inadequate and that's a big reason why she's gone OTT. But they started it
In all honesty, given her overblown drama queen poisoned/traumatised for life response to what happened I am to say at the very least sceptical about her description of the reaction from the branch manager and head office. The responses would fit if all she had done was contact them to say she had been given the wrong product and telling head office she was a vegan.
But you're guessing
Merely offering a refund for giving her the wrong product suggests they did not want any proper investigation as to whether this was a systematic or even an employee discipline issue
A pub I used to go to had an employee that would substitute meat sausages for veggie ones if he felt like it - they sacked him
I once was given a meat takeaway burger by McDees instead of the veggie one I'd ordered. How did I find out? The manager chased after me in the street and profusely apologised
But no I'm not defending her wish for 15 minutes of histrionics loaded fame. As I said, fault on both sides