Instagram has limits on the amount of actions you can perform within a certain amount of time, such as how many you can follow/unfollow/like/etc. Some of the cheaper or self-managed services you see on the web throw your account in to an automated system with no limitations or protective measures at all!
There is nothing more important to us than the safety of our clients accounts. Your dedicated Instagram Strategist will work well within the limits to ensure your account is always good. Better safe than sorry!