Yeah the title is a bit of an exaggeration of my feelings and as you mentioned, I was a bit anxious too since I have been abroad for quite a long time (and encountered something I did not expect in what I thought was an environment that could not surprise me).
Agreed, it could very well be that I was the first customer to question since the cashier started working there.
Thanks for the uplifting comment!
Very good point, it seems to be the most popular advice in this thread and will try this next time!