Over 1 month and still no delivery

I placed an online order on 9th November (Order# ********** 10) for a vacuum cleaner that was supposed to take 3 days to deliver. Its now over a month and it still hasn't been delivered. I have called your ********** 323 and ********** 273 numerous times and either the agents answer the call and immediately put the phone down, or it goes unanswered. I've emailed ********** and ********** and to date, none of my emails have been answered. In fact, I'm the one chasing you up to find out what is happening with the order, I've never received a call from you explaining the delay. I've spoken with many agents who have all given me different excuses and delivery dates. It was supposed to be delivered 2 weeks ago, then your agent Malusi guaranteed me it would be delivered on the 6th Dec, but that day came and went without delivery. I've even gone into your Woodmead store and spoken with Anil (the Sales Manager) to try resolve. The last update was it was supposed to be delivered yesterday, but again nothing! I was told to call your complaints line but surprise, surprise no one answers the call. This service is PATHETIC!