Pathethic Service for Business Clients!!!

I have been trying since last week to upgrade my contract.after been turned away last week by Vodacom at Vodaworld&laying a complaint at the customer service center,i was contacted by a consultant on Saturday &asked to come in on Sunday to complete& have my contract upgraded,after waiting 25min for a consultant on Sunday(17116),Lincolnu was then allocated to assist,after checking my details on the system&seeing that I qualified for an upgrade,we researched options&i made my selection,the device was then handed over to me along with the free gift,after printing out the documents to sign,Lincoln then explains to me that i will still have to pay the balance for the device on my old contract as well as the upgrade contract for the next three months (R449+R270=R719.00pmnth),how ridiculous,no other service provider does this,if you upgrade your contract then the old contract should automatically fall away,why even offer an early upgrade then,whats the point,why did the consultant go through the whole process and inform you at the end of the transaction about this absurd policy,I was so disappointed after all the time spent i had to cancel the transaction as it was unaffordable,PATHETIC!