Negative sentiment for text Could someone please explain why would the following text have negative sentiment? Is there any specific word or hidden semantics that makes it negative? Is completely subjective?

Text:

你那个城市十一银行还上班啊


Title:

【壕卡信用卡11-06】人生首卡，求卡神指教
The negative sentiment can be found in:
1.那个 
2. "还上班啊"
This is an exclamation sentence. The speaker who said it was kind of shocked because the person he/she was talking to have to deal with a situation that was supposed not to happen which is working during the national day.