Poor client service and communication

We booked in my son's iphone 5 for battery replacement at Ifix, Menlyn Centre on Thursday morning (11/2/16) Signed my copy of our agreement stating our device would be repaired between 24 and 48 hours, which is acceptable, they said they will send a quote via email. I accepted the quote which I received at 16:08. Saturday morning we went to the store to find out if the device is ready for payment and collection, just to find that at first they didn't receive my quote acceptance, then they did, but the technician who was suppose to do the repair were out of office. So we asked to see the manager, who also were not in store, so they called her to hear when will she be in, only on Monday the reply came. So by this time we were quite frustrated as there is no answer to when the device will be ready. The manager then miraculously remembered that she knows about the iphone, that as they were about to phone us for collection the newly replaced battery were also faulty so the iphone could not be repaired at all within 48 hours, there is no one who can attend to it. Everyone just sorry about the inconvenience So they just thought it best to not reply at all. Customer service???