If anyone's struggling in that area there are a few things that I've picked up that are important to get people to follow you:
1) Complete your profile
Make sure that you've filled in all the spaces that give you chance to talk about your business. Your bio doesn't give much space so make sure you get all the important info in there website, or web page pointing to your latest promo, and a description about what you do. If your business name is a bit ambiguous, be sure to use your profile to describe the service you provide. This will help you show up in a search when people are searching for your service.
2) Post consistently
Posting on a regular basis helps to keep your followers engaged with your brand so yours is the first name they think of when they need your product or service. Don't wait for something interesting to happen, always have a stream of content lined up and ready to go so you're making regular posts. The more your existing followers engage with you, the more likely you are to show up in their newsfeeds which their followers will see.
3) Create good photos
It might sound obvious but while Instagram isn't designed as an app to showcase outstanding photography, it's not the place for blurry and out-of-focus photos either. There are lots of filters available for you to smarten up your pics, use them! If someone stumbles upon your profile and its full of crappy shots which are painful to look at, they wont stick around for more.
4) Have a strategy
Bombarding your followers with random posts and then giving them nothing for weeks wont help you show up on other peoples profiles. Have just one or two people in charge of co-ordinating your posts and post regularly and with strategy. Decide on the point to your Instagram account and ensure that all posts point to that.
5) Come up with good captions.
While the point of Instagram is to share pictures, it also helps to have well thought out captions which further engage your followers. Its this engagement which will see them commenting and liking and what will help you show up in their followers feeds. Always let people know what you want them to do next: Buy, Contact or enquire people need to be told what action they should take.
Buying followers is quicker but way less effective then gaining a genuine following authentically. Do you have any tips for this?