Renault Gateway Parts- Poor Customer Service

I had visited Renault Gateway- Parts division on the 05 December 2015 to enquire about a part for my vehicle. The door was closed, however a salesman was going in and asked me to come in as he would assist me. When waiting inside, I was stared at by another salesman. I greeted him and his response was 'Do you know that we are closed, we are not helping anyone'. He then continued to say that they are conducting stock take and cannot help anyone. He then took away the salesman who was originally assisting me. Another salesman was helping another customer. I waited and then was assisted by him. He had then said that their systems are frozen and he cannot assist me. Eventually I did get assisted. I am extremely disappointed at the manner in which I was spoken to. As a customer, I was not greeted and was told that no one can help me, but why did the sales rep allow me to come inside knowing that they were closed. Customers are not supposed to be treated in this manner. As a salesman, you would need to be polite to customers.