Not being able to upgrade - low profile

Just want to express my opinion , Vodacom is a poor service provider.<br> I have been told by Vodacom store and customer services that I am not allowed to upgrade due to having a \low profile\" with vodacom. I've been a customer with vodacom for 5 years, I have two contracts with them. My account is up to date and don't have any amounts outstanding. Firstly whats the use of paying for a smartphone contract , if you cant upgrade????? Looks like the only option is to cancel my contract, as they are not willing or able to help their clients.... Maybe they don't need clients anymore."