What to do with a guy that can't take 'no' as an answer?

Anonymous

I attended a class with him 2 years ago in college for a month and didn't know him there. However, he probably knew me. He has also been a student of the school where one of my parents worked as the principal. So he claims to have known me as his High school principal's daughter for a long period of time.

The first time we talked to each other was the day he messaged me in Instagram to tell me that as he wanted a girlfriend and did not have any criterias, I could be his girlfriend. He also added that he didn't find me to be that great and physically attractive but he would do that anyways since nobody was giving him attention at that point. I was offended and turned him down.

He messaged me three days later asking whether my feelings for him had changed. I turned him down that very day once again and said multiple times that I was not interested in him even a bit.

But he didn't give up. I blocked him from many places but he still creates newer profiles, and comes back with the same agenda.

The last time I received "be my girlfriend" text from him was today. It's the 14th time this month. No matter how much I keep on saying "I am never going to like you /my no means no", he doesn't seem to pay much importance to that. I have also heard that he is spreading the rumor that I have said yes to him and he is actually dating me.

As a hardcore introvert, I am not very good at handling such things.

What should I do?

What to do with a guy that can't take 'no' as an answer?
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