Greenbacks purchases are a waste of time

On 30 Sept i used my greenbacks to purchase a juicer. I called the call centre on 2 occasions to find out about tracking the delivery of my item but was told to just wait for 10 woking days and the iem will be delivered. On 7 Oct i recieve an sms saying that nedbank was unable to process my order and i need to call ***. They had no courtesy of calling me, after holding for 15minutes i was told that the item was out of stock and that it was my problem not nedbanks. I eventually gave up as the person who anwered my call was very rude. I proceeded to buy makro vouchers with my greenbacks, this voucher would be sms'd to me but it's been 2 working days over and still I've not gotten an sms with my voucher number. I've been a loyal nedbank customer but their treatment has been horrible as well as their service delivery or lack thereof.