Horrible service from fast way couriers

I placed an order at Mr.Price online on the 15th. I paid extra for fast delivery and they promised to deliver the kids Christmas clothes on the 22nd. It is the 27th today and there is still no sign of them i spent over R200 of airtime calling Mr.Price and fast way, and nothing. There is no answer at fast way, not on their calls or emails or online tracking, this parcell has been out for delivery since the 19th. This is the worst delivery courier services i have ever experienced.