I just need to get write this down somewhere to avoid an anxiety attack. (also sorry for any mistakes and lost in translation stuff, English is not my first language)

So in 2015, I (AFAB, 15 at the time) bought a new phone and changed my number because the new operator was cheaper. I bought this directly from the store and the card with the phone number came in the box with my phone. A few hours later, I start to receive texts from numbers that I didn't know. Some of them called. I didn't know you could block numbers, so I replied to the texts with "Who are you?". They would usually say their name and then ask if I was Ana or Sara or if I lived in a certain city. I answered "No" and some understood and didn't text me again. However a few kept insisting and I would explain that I had just bought that number and I couldn't be that person (I never told them my name or age or anything btw). Again, some dropped it, some didn't. So I changed tactics and would start making fun of them (saying that I was Harry Potter and that I was from Narnia) or I would pull the ultimate card and say that I was a male (this one always worked). I never found out where they got that number or why were they texting me since I never asked. 

Between 2015 and 2017 some more people would text with the same thing, but it would be less frequent. However in 2017, one wouldn't stop. (I still didn't know about blocking numbers btw) It didn't matter how many times I told him that I was not Sara or that I was a man, he didn't believe me. I told my friends at the time and one of them asked what he wanted and why. Basically, he wanted to masturbate while we talked on the phone. We kept ignoring his phone calls until we decided to answer his calls while in our school cantina (very noisy, the people close to the phone wouldn't talk). The guy got pissed, but still kept calling and texting me. 

Then I found out how to block his number. The messages icon would still show the number of unread messages and sometime it would be over 100. I would occasionally go read them and some were just him spamming question marks, some were just hello, but one time he said "I am going to give your number to some of my friends and we will text you and call you all day". This scared me a lot and I spent all afternoon terrified, but no one texted. 

He eventually stopped in 2019.

From then until today (I'm 20 YA), no one texted me. However, an hour ago I got a "Hello" in whatsapp from someone I didn't know shortly followed by a video call. I hung up and blocked the number. I had forgotten about most of this and this just brought it all back. Especially that video call. Now I'm freaking out and can't focus on my studies. Writing stuff down helps me call down and I had never written the full story. Even if no one reads this because it's too long, at least it helped me relax a bit.