Extremely bad Service

This is now my 3rd complaint against Mtn the Grove. Saturday, i was in Nelspruit to go and collect my new device, in which the respond from Leroy is that Mtn Head office never got back to him since the Wednesday that i was there with a reference number so that he can release my new device to me. He did confirm that he has the new device in the store he just need the reference nr. So he got hold of the new area manager Edwin, i spoke to him and he said sorry its Saturday he can only help me the Monday. Monday when he is back in the office he will speak to Leroy and do his investigation on who is the person responsible for the negligence and then he will be in the Nelspruit office and he will phone me, so Edwin did phone me at 16:00 Monday afternoon, he said that he is waiting for H/o to phone him before 17:00 with the reference nr and he will them personely drive threw to Hazyvew to my work and deliver my phone at my work, which is Today. But Edwin never contacted me since yesterday 16:00 and still no phone was delivered to me. So i still have no phone. Because of their negligence i am behind om my payments and i am the person suffering because i cant do payments