GROWING WITH 1000 FOLLOWERS A DAY.
IG sets limits to limit organic growth. 500-1000 followings a day. 7500 max followings. Without these limits, everyone could grow easily to THOUSANDS of followers if not MILLIONS. And the need for using Instagram/ Facebook ads would be lower than they need. Ads are their daily bread. To go around these limits for organic growth. I would have 50 Instagram accounts. If your really extra ambitious, unlike most people, HUNDREDS of accounts. Consider them affiliates/fan pages. The more affiliates you have...the more lucrative you are. This isn't something new...but it's far from popular. When it gets popular IG will keep on charging the rules to make it cost much much more to do this. And make it harder on top of it. You can check out some IG accounts that have done it before. 'alexisren' and 'sommerray' They are a few of the know models with Hundred of fan pages, that wont be hard to come accross. That have grown their accounts to that level in long term.
This service could cost from 800 to upwards of 8000 GBP per month. But since i'm only getting started I'll only charge the cost of setting up, I will give the details of, and work FREE of charge for two months. I would direct the traffic from these accounts about 8000 people a day being directed to your main page. With 50 accounts.
You could expect over 20,000 followers within the two months.
I also know some more affordable methods, but I 100 percent recommend this as a start.