CLient not informed

In September I upgraded 2 numbers , my understanding of an upgrade is the current contract with all its services are stopped and a new contract is put n place. I did the upgrade online and only signed for what was offered.<br> Number 1 - I was billed for screen insurance which I did not request , I called and a query has now been logged. but not cancelled yet.<br> Number 2- was initially a Blackberry contract and I upgraded to a tab/data package , I am still being billed for BIS because I did not tell Viodacom to stop the BIS service. Nowhere during the upgrade was this indicated that I need to cancel the BIS and as it is an upgrade I expect the cancellation of the old and activation of the new. I am now informed that there is nothing Vodacom can do!<br> Upgrading online is obviously not easy at all afterall, there is nothing to guide on what the contract include or what needs to be cancelled .<br> i am very disgusted as I feel Vodacom is taking money from their clients that was not agreed to!