Out of stock

Today I wanted to re-order one of my chronic cancer medications on- line but there was a notification on the Medxpress website that the medication is out of stock so I could not order. I then checked with my regular pharmacy Dischem in Sea Point who confirmed they have stock. I am then trying to phone Medxpress to tell them that Dischem have stock but after waiting in vain for 5 minutes I gave up. How come Medxpress say their medication is out of stock and meanwhile Dischem has stock. Why must I find out if my medication is available or not? Why must I have to call the Medxpress call centre and wait for someone to eventually answer my call? Their service is terrible. Could someone in charge at Medxpress please do something. Discovery forces us to make use of Medxpress otherwise they add a levy. Their customer service is not good enough.