People who can't take no as an answer

"Oh so it's a no from your side. Is there a chance. I am going to ask you this one more time. "
We all might have come up with a situation like this right? Yes there are a lots and lots people who can't simply accept a no for an answer.
They expect a positive reaction from us all the time. But think about it what is the point of asking if they can't take a no as an answer.
Once I came up with a situation. It's that I have to give a feedback on a place I went for training to my college infront of my classmates. The set up was like we were doing it in a seminar hall. And my turn came and I was representing the five to eight members of my team went to that training center. Everyone I mean most of them expect oh it's she , she was going to tell something positive now. But I said some really unpleasant experience from there and all. They were all like oh is she saying a negative thing.
What is there to be so strange.
And another example this is important I met a guy we became friends and we were pretty close that for some time I would do literally everything he says. Note the point here he was my friend okay... But somethings came up and we got detatched. Then again we came up in contact . But at that point I stopped doing ' literally whatever he said" . One day he asked me to eat four chapathi . I said no. The next day onwards he stopped talking with me again. Really please my readers if there is any look at it can't I even decide how much my stomach needed.
And another experience, some new guy from my class i saw him while looking back ward to my teacher and our eyes met and I out of politeness I smiled at him. And the very next day onwards he asked me can we be besties... Can we go out for a coffee my answer remain no. Then he starts to body shame me.
Some NO need to said as No even if people surrounding can't accept that. Sometimes saying 'NO' is a blessing in disguise.