Unsatisfactory service by a staff member

Visited Pep stores in PE at Kenako Mall this morning, I paid to a cashier by the name of Xabisa. She has no way of speaking to a customer even after I told her she was being rude to me, there was no apology or changing the tone of her voice or even showing interest in what she was doing. She made me feel stupid and humiliated me, the speed point machine was faulty and she new about it. She kept on telling not to be too fast or slow while punching my pin of my card bit what annoyed me was the manner she was telling me. I called her manager who didn't even seemed interested, while asking in front of everyone "who's looking for me?" I reported the lady while everyone was listening including other customers. I highly doubt she will even speak to her, instead I will be a laughing matter to all the staff. I really hope that someone will take note of this complaint, as I have taking my time hoping it will be addressed with the branch and individual.