Horrible experience with Estee Lauder staff. This...

Horrible experience with Estee Lauder staff. This incident happened on 08/17/2017 around 8:45pm at Hudson Bay Estee Lauder center in Square One, Mississauga. The lady who was at the counter did not common courtesy or customer handling experience. Extremely rude and insensitive. I waited for 15 mins until i was asked what i need - understandable that there was another customer ahead of me - no issues. However when i made the purchase and was ready to pay, i was turned down saying that there was another customer ahead of me. I was surprised because there wasn't anyone around when i waited for 15mins. It seems this customer who was supposedly ahead of me was there earlier and had left the counter to go check out products at another counter and just returned!! So this means if a customer who was there in the morning returns in the evening then they will be given priority over the person who is right there holding the credit card ready to pay?? Is this the sort of training Estee Lauder gives their employees? If the products werent good i would have ditched this line of product tonight....