Horrible service from Vodacom accounts/customer care

I would give a NIL star if I could. I'm trying to take out a new contract with Vodacom, however I'm unable to do as my contract from 2016 reflects as current. I've been transferred between accounts&customer care too many times to count. This still has not been sorted. Now I've had to do a chargeable call to *** customer care number & hold for 16min but still no resolution. All I need is for my old 2016 contract to be changed to "paid in full", is this too much to ask