There are a lot of websites selling followers. These websites own many fake Instagram accounts and after your payment you will immediately get thousands of new followers. But these followers are not real. They will never buy something from you, and they will never like or comment on your posts.
The only thing this service will give you is a higher number of followers in your bio. Having followers like this is even bad for your account. Because they will never engage with your content your engagement rate will drop. The result will be that less real followers will see your posts on Instagram in the future.
Our service is different. We will engage with real people, follow their account, like their posts etc. We cannot force them to follow you back. But if they follow you back it means that they are interested in your content. You will have a real person following your account. A real person able to buy from you, like your posts or make comments.