No Pepsi 600ml at retalers.

Months and months with most retailers not having 600ml Pepsi Max in stock. Here and there at a pick and pay I might find one or two. No retailer can explain to me except to say they order but do not received stocks. I am on the west rand and this applies to Pick and Pay, Checkers, Spar (who don't seem to stock any Pepsi, President Hyper etc.