Bad service and Ignorance

I was admitted this morning 23 August 2021. I had an angiogram done. I have to stay overnight as I have to go for a gastroscopy tomorrow. Since 9 this morning I had nil per mouth. Angiogram was done at 3. I was back in the room at 4. I asked for water 3 times now and no responce. As from 10pm again I cannot eat or drink and it is now 18:56 and still nobody came to check on me or bring me something to drink. I just think this is unacceptable!!!!!!