Non Delivery of phone

I called into the upgrades department on Thursday 15/10/2015 to order a Huawei P8. I spoke to Hope Phasha. On Monday 26/10/2015 I was called by the delivery company telling me that their driver has been hijacked and I will be communicated with about a replacement phone. I called MTN again on Wed 23/10/15 and was referred to the courier company to ask about my phone. Courier company referred me back to MTN. I was told hope will call me back. I called again on 24/10/2015 and was told that Hope was busy and she will call me back. It's been a week of me trying to get assistance from MTN to get my phone and nobody seems to give a damn!