New line opened instead of upgrading the existing number

My line *** was due for upgrade, received a call from vodacom advising of that, I took the upgrade however a new line was opened, I cancelled the contract and called after sales, Oscar Shirindza upgraded my existing line and I received the phone, Oscar did not request for the phone to be picked up, he advised me that I will receive a call for the phone Tobe collected, I'm still waiting. I'm going to be billed for a line i cancelled. I have been following up daily with vodacom, it's excuses all the way. I'm tired of of this please come fetch ur phone and bill me with the right amount. I never ever have joy whenever I upgrade with Vodacom, I don't know why this consultant not listen to clients, do they get paid for opening new lines because its always my pain point whenever I upgrade. I will not be upgrading with vodacom ever I'm done, ***