Phone not ready as promised.

The screen on my Samsung S5 stopped working on Friday 24th April and i took my phone into the 14th Avenue service Centre same day at 13:04. The person that booked the phone in assured me that a screen replacement should take 3 to 4 days and that they were working over the long weekend so that I should call Monday morning first thing and it should be ready. This is a business phone so I cannot be without it during working hours. To my horror, I called in this morning, 27th April and the phone is only still being assessed and has not even gone in for repairs. The consultant that I spoke to could not give me any indication of when the device would be ready and made no effort to find out for me. This is shocking service from Samsung. I was happy with the phone, but your customer service is poor. In future I won't support any of your business units, including smart phones, washing machines, TV's etc.