Instagram username purchase

So I was trying to purchase a 4 letter Instagram username from a random guy on Instagram. We agreed to reach a deal wherein I would make the payment and he would give me the account having the username, which he did. I had already typed the username in my personal thinking I would release it from the account and secure it within a second from my personal. But little did i know that as soon as i released it, it would already be acquired by some other account with a span of millisecond. I later discovered a new account with the username popped up and the same guy texted me from that account and mocked at me. I was scammed. i think he had done some kind of scripting or programming to acquire the username as soon as it was released. How did he do it? i want to know. I'm a newbie, please forgive me if i made a mistake or ask dumb questions. Thanks

I assume there are bots constantly searching and looking for best available names and grabs it before you....ORR the username goes back into some kind of username pool which takes a while to become available again. Either way, that's shitty.

You just got turboed my friend. There are programs out there that can check the availability of a name like 100 times a second or some bullshit.

If the deal sounds too good to be true then it usually is.

lizzyb said:

I assume there are bots constantly searching and looking for best available names and grabs it before you....ORR the username goes back into some kind of username pool which takes a while to become available again. Either way, that's shitty.

Click to expand...

It definitely didn't go to the pool since the person sent me a screenshot of what looked like a shell window which checked the availibility of the username and he typed some command to "Stop" searching for it. I just want to know how exactly its done.

mladz said:

You just got turboed my friend. There are programs out there that can check the availability of a name like 100 times a second or some bullshit.

If the deal sounds too good to be true then it usually is.

Click to expand...

this is what he sent me later.

Lesson learned, there are indeed pieces of software which can target a single or set of usernames.
Always buy from trusted sellers, or use a trusted middleman/service to help you secure the deal.

Sorry for your loss