DIS-CHEM Terrible service and misconduct.

I bought Supplements on sale 7 workdays ago and was told that it would be delivered within 2-5 working days. Today I got a phone call telling me that only some of the items will be delivered since they don't stock the other any more. This means they are selling products and approving the sale and delivery, without even having the product. Also this is the worst online experience. No one answers the phone for assistance. I am utterly disappointed in this service since it is always great in store.