MTN Upgrade agent took the delivery details wrong and now I have to sort it out - and instalment taken without device supp****?

Very disappointed. I upgraded my contract, and the agent that assisted me could not understand what I was spelling / telling him regarding the delivery details. they had already deducted the first instalment and I had not even received my phone yet? The DSV couriers got the wrong delivery details which is being shipped to Pietermaritzburg and I live in Pretoria? Now the DSV couriers are taking 2 days before I can even just update my details. If I do not get my package and it gets lost like all the other complaints I want an instant refund on the instalment and cancellation of the contract.