A look at the soundcloud unfollow bot tab within the Soundcloud Manager software. Find out how to create unfollow routines that will run on auto pilot, repeating every X hour and only unfollowing accounts to a range of specifications.

You will need to unfollow accounts that do not follow you back to keep within the limit of only being able to follow 2000  users at any one time.

By following and unfollowing repeatedly, soon you will have  huge number of targeted followers to your account!