Lidl Ireland - Castlebar

I did my shopping in lidl castlebar this evening at approximately 8.20p.m. Checkout 1 was the only checkout open. I was told by the girl on the checkout three times to hurry up. This us the first time this has happened me in lidl. I was shocked and it made me very nervous. I still cant believe it. I felt like leaving my shopping there. How can this be allowed in such an excellent shop. How can a worker get away with insulting a customer. Receipt available on request.