Handset change

I currently have a contract with Vodacom. Due to my work requirements, I am required to change my handset to an Apple iPhone due to specific apps that I require that are not on my current phone. <br> <br> I have phoned and gone to a Vodacom store and no one is willing to help me. I want to do the following and it just seems like no one is willing to understand the situation:<br> <br> - Keep my current number<br> - Change my handset<br> - Upgrade the contract if necessary<br> <br> The big issue seems to be that I first have to cancel my contract which will cost an absurd amount. It is not like I'm going away to a different provider. I am sticking with Vodacom but this is making me question their willingness to make an effort to accommodate my situation. Surely this shouldn't be a big deal. In fact, when I take up the new phone with the new contract, Vodacom will have my business for longer. <br> <br> I hope someone at Vodacom sees this and realises that a simple request like this shouldn't have so many issues.