Cheers @ Woodlands MRT review: Apparently am invisible and can't be heard by cheers staff

On 19 Oct, estimated time was 13:15, I was parched and rushing off for my medical check up. I was dumb enough to decide to get a bottled mineral water from Cheers @ Wdlds MRT station. I was ready to make payment, but no one was at the cashier. A male staff was standing a few feet away towards the left, in, where there was another tiny room. He was just standing there, I then called out 'Hi". No response. seconds later, I said " Hello". No response. He did not even turn, so I assumed he could be having a hearing problem. I called out again, I said, "Hi, hello." I added that " I am in a hurry. Hello" he just stood there still, just ignoring me, did not even turn. Dehydrated and annoyed, I left the bottled on the cashier and walked off. Great staff Cheers have there! More staff should be trained to ignore customers. Keep on cheering for Cheers!