I think that, in line with charez said that you have to have active referrals. I see that you already are blessed with quite a number of referrals. Now you may go for more but I would suggest that you try to motivate your current referrals to be more active. I think that you advertisement should be accompanied with a strategy of motivating your referrals. Maybe your referrals are not getting what you have advertised, after joining
So once you get your referrals you should train them how they can get what you have advertised. This will ensure the satisfaction and prolonged activity of your referrals. And this will help you achieve your targets.
In short, First you learn, then teach others what you learned, then teach them to teach others what they have learned. And then you will see how easily you can reach your goals