No delivery for my order

On the 27 March 2015 I ordered a Wonderbag online on Nedbank greenbacks website, with my greenbacks points of 9000 GB. After the Easter weekend I called them to follow up on when is the delivery, the call center agent I spoke to said it will be the next Friday due to the Easter holidays their courier was not working. I waited on Friday but there was never a delivery to this day i haven't heard from them and my Wonderbag hasn't been delivered. I will not accept such kind of service especially from my bank, can they please deliver my order I don't need a call from them to tell me excuses they must call me to let me know which day are they delivering my goods. I will only appreciated that.