"Restaurant staff very rude"

I went and had a meal in the downstairs restaurant. The person serving was very polite and friendly however the person on the tills was the most rudest person I'd come across in a while. No please no thank you she didn't even tell the lady infront the cost of the food, just took the money and threw her the change. First impressions food is ok but this woman has put me off going again On a positive note though very pleased with the staff on gate 21 although it did take 30 mins for them to get advice on removing my venflon, a lot of waiting around but the doctors were very thorough. Thanks gate 21