"Rude experience from Information booth"

I had a day surgery scheduled  with my OB GYNE at Prince of Wales Private hospital recently. I was at the Barker St entrance for my admission in the late afternoon and since it's my first time in the hospital, I went to the Information booth at the ground level, near the cafe area  to ask for directions how to get to Prince of Wales Private Admissions floor.

The 2 people staffed at the Info booth were having a chat with a colleague. I went to the counter thinking they would at least acknowledge my presence or ask if I need help as what I expect customer service would be. But I recall the staff did not even look at me and just went on with their chats. Waited for around 2 to 3 mins until I decided to waive at them and say "Hello, I need some help". And only then they looked at me with seemingly poker faces but still proceeded to ask them politely where the admissions floor is for Prince of Wales Private. They showed me the direction to the lift and thanked them.

This behaviour felt like a racist act since I'm of ethnic descent and when they found out I was headed to the private hospital, they seemed to somewhat become helpful. Not a great experience for a first timer, and I feel staff like these should be trained proper customer service given that they are supposed to assist for information for such a big hospital and yet they behaved like this.