"Doctor was very rode"

People in reception was very helpfull but the doctor was very rude. Firstly they told me that my nails are too long to check my oxygen level( i never had any problems even at the hospital), also, as i was feeling unwell and i was coughing the doctor was kinda annoyed. I told that i feel a bit pain in my heart side and the doctor didnt even check my blood pressure or anything. Then i asked to give me a note or something to show to my university and they said no we dont do this. I asked whether is there any other way to get me a note. The doctor raised her voice and said that they're not gonna repeat again and i left as i was afraid to ask anything else. That was the worst appointment ever. The first appointment in this clinic was completely different as i had another doctor but this time wasn’t nice.