no didiver chronic medication puts my life at risk

I called in to make an order for pick-up of Didiver chronic medication. I was told that they are out of stock. Dischem Westwood Mall, Overport City, and Pavillion apparently are all out of stock. This is extremely life altering as it puts my life at risk. Didiver needs to be taken everyday. Dischem should never have accepted my 6 month script if they were not going to provide the medication. I feel hurt and misled by them just wanting to make money of my script and endangering my life in the process.