OVER 2 WEEKS WAITING FOR ONLINE ORDER TO GE DELIVERED

I am very disappointed at the poor service I have received at Vodacom . ordered online, and itsalmy 2 weeks no one callls to update me on my order and delivery .. when I call the consultants never give a satisfactory answer.... my order should've been delivered by now where do I go to escalate this....I have been sent from pillar to post, when I asked for escalation or complaints department email no one provides me with this information, what's worse consultants are always promising to escalate my complaint and call me to provide update but that NEVER happens.. really I thought Vodacom excelled on customer service, but I have been proven wrong ..