NO RESPONSE/POOR SERVICE

I have taken my phone (Samsung S4) to the Rosebank Store for a cracked screen repair (04-02-2015) ,Prior to this I had called and a man says it would take 1 hour to repair and stock is available. Upon arrival I given all documentation as requested to be informed that they are out of stock and will have stock the next day, I have left my details to be contacted when stock arrives, to date I have still not received a call from them to tell me that stock has arrived. Apparently an order was made whilst I was there! This is absolutely unacceptable from a well reputed company who has many products on the market which are of demand!!!!