Best answer by Mathis
Thanks for posting on the help forum. Hmm, let's see - I've just looked into this and started following you from my account mathisc. It registered properly and you can see this reflected on your followers page here: https://soundcloud.com/carao/followers
Please note that it might take a moment for the new follower to register on your public profile (where the number of followers is indicated under your profile image. Also, and this might just be one of the reasons why it seems like the number of followers doesn't seem to change, please note that some users are trying to abuse the following feature in the way that they're hoping to be followed back by whoever they start following, to then unfollow that user again - this is not something we condone and we've put into place limits for this to be prevented as much as possible.
Other then that, I suggest adding your tracks to groups, following people whose music you enjoy and leaving genuine comments on their tracks - all three of these things can lead people back to your profile and if they enjoy your music they will add and leave comments for you as well, and start following you :-)
Additionally, here is a great guide for how to use SoundCloud to your advantage: http://on.soundcloud.com/creator-guide
I hope I was able to help! Let me know if you have any other questions or concerns, I'd be happy to help.