Castle Free but not enough stock ever

I must say I am very disappointed in SAB. I have started drinking Castle Free as I stopped drinking completely and the Castle Free helped me by not trying to drink anything else, but now the issue I have is that there is about no stock, every time I need to drive to 2 or 3 different bottle stores before I get, and I buy on average 2 cases a week, but this week I have not found anything and all the bottle stores inform me that they keep on ordering and SAB says they have no stock, this is becoming one of the best sellers but there isn't stock. So I am very disgusted in this. I hope that this issue will get resolved quickly. Hope to hear from someone??