Number change taking forever

I took up a new contract and made it emphatic during the online telephonic discussions that I want the number on my existing Telkom number. I got a new SIM number which was activated same day (21 December 2017) but a different number allocated. I called the call center on same day to change the number to my existing number but I was advised that it would take working 72 hours. After that day, I have been calling and being told different stories. It's almost 2 weeks now and I haven't been helped and what's most pathetic is that I'm told different stories each day.