Worst After Sales Service

Ordered an upgrade on my main contract line from the Vodacom online site and validated the upgrade was done on the correct number of my 4 contracts. Got confirmation via SMS confirming the upgrade. The phone was delivered in a few days, a week before the end of the month. At the end of the month the new contract was processed, but on the incorrect number, my data sim line that I had upgraded for another 24 months two months prior. Calling to get this resolved has been a nightmare. All the agents offer no real solution other than to return the contract items I was delivered, now that I have already wiped my old phone and given it away and after dealing with two different call centers and escalating the issue, they all promise it will be sorted out and then communication ceases. If I call the support line, I get an agent that can't help me, sends to another department or superior and we start the whole process again. It's been 21 days and I am no closer to sorting this out and seem to have no way to contact Vodacom directly to resolve this. The same upgrade on the wrong contract also happened two months prior using the site to perform the upgrade and that was resolved telephonically.