To have pulled her up on this

[Catlady1976]

So I was in Waitroise shopping and as I have a my waitroise card can get a free tea or coffee. So I paid for my shopping and was given my cup to take to the self service machine. The queue was long so the lady on customer services told us there was another machine at the deli counter
I arrived at the deli counter and the person serving started to make the tea.
A deli counter customer arrived and she left my tea to go and serve the customer. It wasn't a quick transaction so I started to get edgy as my car park ticket was about to run out.
So she than left deli counter customer to finish off my tea. She than apologized and pointed out she had only one pair of hands. I said that she should have finished serving me as I was 1St.
So I was I be reasonable to say this or was I rude as I wasn't actually paying for the tea.

You were not unreasonable at all Catlady. If Waitrose offer free tea and coffee to their cardholders then they need to do it with good grace and not act like you're a free-loading pain in the ass when serving you. If the self-service machine had have been working then you wouldn't have been 'troubling' the deli worker in the first place. In my local you can practically guarantee that the self-service machine will be out of milk or need cleaning when you go to use it so every time I have to push my bagged and paid for shopping back up to the deli to get my cup filled by someone who clearly feels this is beneath them and makes no effort to hide it.

Firstly, if it's not the deli workers job, then why is the machine there and not accessible to their customers for self service? Secondly, regardless of how much you are spending, even if you're spending nothing, you do not abandon a customer half way through serving them. It's not hard, you press the button, wait for the cup to fill and hand it over, then you serve the next person in the queue.